Citation
Florida kaolins and clays ( FGS: Information circular 2 )

Material Information

Title:
Florida kaolins and clays ( FGS: Information circular 2 )
Series Title:
FGS: Information circular
Creator:
Calver, James L
Place of Publication:
Tallahassee 1949
Publisher:
[s.n.]
Language:
English
Physical Description:
59 p. : front., map. ; 23 cm.

Subjects

Subjects / Keywords:
Kaolin ( lcsh )
Clay -- Florida ( lcsh )
Lake County ( local )
Putnam County ( local )
Bricks ( jstor )
Colors ( jstor )
Soil science ( jstor )
Genre:
non-fiction ( marcgt )

Notes

Funding:
Digitized as a collaborative project with the Florida Geological Survey, Florida Department of Environmental Protection.

Record Information

Source Institution:
University of Florida
Holding Location:
University of Florida
Rights Management:
The author dedicated the work to the public domain by waiving all of his or her rights to the work worldwide under copyright law and all related or neighboring legal rights he or she had in the work, to the extent allowable by law.
Resource Identifier:
023298170 ( aleph )
01727625 ( oclc )
AEV2625 ( notis )
gs 49000139* ( lccn )

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Full Text



F L 0 R I D A T A T E B O A RD 0 F 0 0 N 8 E R V A T IO N
George:Vathis,,. upprvisor FLORIDA GEOLO6I6OAL SURVEY Herman Gunter, Direotor








INFORMATION CIRCULAR No. 2







F L 0 R-I D A K A 0L I N S A N D 0 L A Y S




Prepared by
*James L. byv Ascit Geologist

Florida Geological vey








TALLAHASSEE, FLORIDA 1949






























......... .. .. ..... k. l n be r n .a d 77 v r u d n. D a n f o
.~~~~t ......-.






.. .. .. ..
















View Of Edgar Plastic Kaolin Company? s pit at Edgar, Putnam County, showing dredges kaolin-bearing sand, and overburden. Drawn from Photographs taken by Gunter and Stubbs in December 1940.








FOREWORD



During the years that have elapsed since the Florida Geological Survey published in its 15th Annual Report, 1922-1923, "A Preliminary Report on the Clays of Florida", by Olen G. Bell, additional data have been gathered by the Survey. These data are presented here and make available to researchers and to industry knowledge of Florida's clays which supplement and amend the earlier report. Part I contains factual data on the sedimentary kaolins of the State which were abstracted from an unpublished manuscript: "Florida Ka'lins", by Mr. Frank Westendick. Mr. Westendick determined these data while employed by the Florida Geological Survey, however, the manuscript, dated 1941, was prepared under an agreement with the Survey in cooperation with the United States Bureau of Mines. A revised copy of Mr. Westendick's manuscript which incorporates the editorial suggestions made by R. W. Smith, Hewit Wilson, and T. A. Klinefelter of the Bureau of Mines, is on file and may be consulted in the offices of the Florida Geological Survey. Part II of this report contains heretofore unpublished data on the common clays of Florida and is an abstract of a manuscript written by Dr. James H. C. Martens entitled: "The Clays of Northern Florida." A copy of the original manuscript, dated 1929, is on file and may be consulted in the offices of the Survey.





C CONTENTS



Part I
Page

Florida Kaolins. . . . . . . . . .. . . . . . . 1
Introduction. . . . . . . . . . . . . . . 1
General Properties. . . . . . . . . . . . . . 1
Extent of Deposits. . ................... . . 2
Laboratory Procedure and Explanation of Test Data.. ........... 3
Description of Deposits by Counties
Clay County. . . . . . . . . . . . . . . 3
Jackson County . . . . . . . . . . . . . . 4
Lake County . . . . . . . . . . . . . . . 4
Marion County. . . . . . . . . . . . . . . 6
Pasco County . . . * 7
Polk County. . . . ... .... . . . . . ..... 7
Putnam County. . . . . . . . . ...... . . . 7
Santa Rosa County. . . . . . 9
Walton County. . . . . . . . . . . . . . . 10
Washington County. . . . . . . . . . . . . . 10

Part II

The Clays of Northern Florida. . . . . . . . . . . . 20
General Statement . . . . . . . . . . . . . . 20
Description of Deposits by Counties
Alachua County
Campville . . . . . . . . . . . . . . 20
Hawthorn. . . . . . . . . . . . . . . 21
Bay County
Panama City . . . . . . . . . . . . . . 21
Calhoun County
Blountstown . . . . . . . . . . . . . . 21
Darling Slide . . . .... . . . -- - . 22
Clay County
Green Cove Springs. . . . . . 0 . . . . . . 22
Russell . & . . a . a . . . e # # - . 23
Middleburg. . . . . . . . . . . . . 23
Duval County
Dixton. . . . 23
Escambia County
Molino. . . . . . . . 24
Century . . . . . . . . . . . . . . . 25
Pine Barren . . . . . . 25
McKinnonville . . . . . 26
Muscogee. . . . . . . 26
Yniestra . . . . . . 27
McMillan. . . . . . . . . . . . . -... 27
Flagler County
Bikes Prairie s . . . . . . - - 28
Black Point . . . . . . . . 28
Haw Creek . . . . . 28
St. Johns Park. . . - 29
Gadsden County
Havana.* . . . . . . - - - . . 29
Quincy., 30
Midway. . . . . . . . . . . . 31
River Junction. . . . . . . . . . . . 31




- Page

Oulf County
Port St. Joe . . . . . . . . . 31
Wewahitchka . . - . .. . . . . 32
Holmes County
Argyle . . . ,. . . . . . . . . . . . 32
Ponce de Leon. . . . . . . . . . . . . . 33
Jackson County
Cottondale . - a . a a . 33
Marianna . . , . , . . , , , . 34
Round Lake . . . 35
Jefferson County
Wacissa. . - - . . * . * . . . . . 35
Leon County
Woodville- . . . .. . . ; . . . . . . . . 36
Liberty County
Alum Bluff . # * . .... .. . . . . . 36
Bristol Landing. . . . . . ........ 37
Estiffanulga . . . . . . . . . . . . . 37
Nassau County
Callahan . . . . . . . . . . . . . . . 37
Boulogne . . . . . . . . . . . . 38
Orange Bluff . . . . . . . . . . . . . . 39
Brick Yard Landing St. Mary's River. . . . . . . . . 39
Okaloosa County
Milligan . . . . . . . . . . . . . . . 39
Putnam County
Springside . . . . . . . . . . . . . . 40
Woodburn . . . . . . . . . . . . . . 40
Orange Mills . . . . . . .. . . . .; . .. .40
Hopkins Point. . . . . . . 41
St. Johns County
Hastings . . ... .... . . . . . . . . 41
Santa Rosa County
East Branch Coldwater River. . . . . . . . . . . 41
Allenton School. . . . . . . . . . . . . . 42
Crow Bridge, West Branch Coldwater River . . . . . . . 42
Milton . . . . . . . . . . . . . . . . 42
Walton County
Paxton . . . . . . # . . . . . . 43
Red Bay. . . . . . . . . . * . . . . 43
Argyle . . . a . a . . . . . 44
Washington County
Caryville. . . . . 9 . . . . . 44
Chipley. . . . @ . . a . . s # . . . 44
Vernon . . . . . . . . . . . . . . . . 45
Wausau . . . . . . . . . . . . . . . .45



ILLUSTRATIONS
Figures
View of Edgar Plastic Kaolin Company's pit,
Edgar, Putnam County . . . . . . . . . Frontispiece
Distribution of Kaolin in Florida and .Area Included
in the Common Clay Investigation . . . . . . .Facing page 1

Tables
1. Chemical Analyses of Florida Plastic Kaolins and Clays . . . . 12 2. Physical and Ceiamic Data of Florida Platic. Kaolins and Clays . . 15 3. Physical and Firing'Properties of Florida Clays. . a . . . 48







Distribution of kaolin in Florida and area included iz the com.ron clay investigation


-- - - - -- --







T l. -- At 1a n o

0 a e a a



Su 1 f
-- .2 1






o f -Se x i o







Approximate location of kaolin-bearing sand areas


outline of area inclosing the counties in which the common
.2,..g, clay deposits described are situated
\ ~.r- 1






Part I


FLORIDA KAOLINS


INTRODUCTION

Florida kaolins, because of certain superior properties, are used almost exclusively for fine ceramic .whitewares and are incorporated in nearly all standard whiteware bodies. The known extent of the proven kaolin deposits of Florida is limited and a great deal of exploratory drilling and testing will be necessary before reserves can be fully established. The data presented here were gathered during an investigation to determine the quality of undeveloped kaolin outcroppings, old workings, and deposits reported from well drillers records.


GENERAL PROPERTIES

The kaolins of Florida occur naturally mixed with large quantities of

sand and small quantities usually less than 2 percent, of mica, iron and other opaque minerals. The kaolin content of the sands varies from 5 to 45 percent and averages about l percent. The sand and mica are readily eliminated by the usual commercial washing methods, but the color of the raw kaol.n does not yiold to the generally used bleaching processes. The light cream tint of the washed kaolin while not acceptable to the paper trade is not objectionable in ceramics. When fired, the kaolin has a near white tint about the same as the best Georgia kaolins. Florida kaolin has the unique property of high plasticity which is so pronounced that for years the trade has used the term "Florida Plastic Kaolin." It has about the same degree of plasticity as the usual English or Western Kentucky and Tennessee ball clays. In some ceramic bodies, notably certain types of dry-pressed porcelains, .complete substitution of Florida kaolin for the kaolin-ball clay body is possible. In other bodies, where the ware is moulded in the plastic state or cast, Florida kaolins cannot




2

be substituted for ball clay completely because of their high drying and firing shrinkages. The ball clay content of such bodies may be decreased decidedly by the addition of some Florida kaolin and this partial substitution results in a body that has good plasticity and shrinkage properties as well as-a desirable gain in color. There is a general trend in the ceramic industry to employ dry press procedures rather than plastic or cast, and the increased use of Florida kaolins seems to be assured. EXTENT OF DEPOSITS

The known deposits of kaolin having commercial value occur in a large area in east central Florida and in a smaller area west of the Apalachicola River in western Florida. The central Florida deposits lie within the Lake Region and extend in a belt up to 25 miles wide from southern Clay County to southern Polk County, a distance of 150 miles, The eastern boundary of this belt is approximately 10 miles west of the St. Johns River. Although the kaolin is not continuous throughout the area described above, the irregular outlines of individual deposits are suggestive of remnants of a former continuous bed of kaolinitic sand.

In the western part of the State, kaolin deposits occur in a narrow belt that extends from Round Lake, Jackson County, westward to the Escambia River, Santa Rosa County, a distance of 125 miles. Here the deposits are more scattered and more irregular in their occurrence than those of central Florida and there has been no commercial development.

Kaolin deposits have been reported in other sections of the State, notably in Citrus, Hernando, Levy, Pasco, and Sumter counties, however, these deposits are for the most part white phosphatic clay and have been mistakenly identified as kaolin.





3
LABORATORY PROCEDUE AND EXPLANATION OF TEST DATA

Standard laboratory procedures were used in making the screen analyses and the forming and drying tests. The slaking time tests as well as the transverse strength determinations in both the green and fired tests, were made on mixtures of 50 percent kaolin and 50 percent potter's flint. Standard ceramic test procedure was followed in the determination of the firing characteristics except for the method of firing. Individual firings were made to cones 010, 05, 1, and 4 in a Caulkings Revelation No. 5 gas fired pottery kiln, and to cones 7, 10, and 15 in a gas fired Denver Fire Clay Company muffle type assey furnace. The Caulkins kiln was heated at the rate of 65 degrees F. an hour for seven hours, then at the rate of 80 degrees and then 90 degrees. The heating rate was slowed down at the finish and the final cone was allowed to soak down. A uniform rate of 90 degrees an hour was used in heating the Denver furnace.


Description of Deposits by Counties

CLAY COUNTY

Although the southwestern portion of Clay County lies within the proven area of kaolin-bearing sand, new information for only one locality is available. The chemical and' physical test data on four samples collected from the old kaolin mine at "Chalk Hole"; about five miles east of Keystone Heights, indicate the kaolin to be high grade and comparable with the best produced in Florida. This mine is situated on the Foremost Properties, a portion of the J. C. Penny-Owinn Corporation's holdings, in Sec. 6, T. 8 S., R. 23 E.

Descriptions of the samples from this property follow:

0-353 Grayish crude kaolin-bearing sand from boring in floor of pit.

0-354 Grayish crude kaolin-bearing sand from boring 30 feet south of pit.

0-355 Washed kaolin obtained from ball-like masses on edge of lake.





4

0-467 Grayish Qcude kaolin-bearing sand from boring in floor of pit.

The cheiiical anaLysis, see Table I, was made on a composite of sample 0-467; physical test data, see Table II, are presented on all these samples. JACKSON COUNTY

White kaolin-bearing sand is exposed in the road materials pit located

1.7 miles south of Round Lake on J. A. Seale's property, Sec. 24, T. 3 N., R. 12 W. Sample 0-400 is a composite sample from auger holes drilled to the depth of 16 feet and located within 12 feet of the exposure of white kaolinin the pit. The chemical analysis, see Table I, and data on physical properties, Table II, indicate this kaolin to be very similar to the better clays of Putnam County.


LAKE COUNTY

In the past Lake County has been one of the principal producers of sedimentary kaolin in Florida, however, since 1932 or 1933, all of the Florida kaolin production has come froin mines located in Putnam County.

Numerous deposits of kaolin-bearing sand occur throughout the entire western half of the County but data ae available for only three localities:

1. Lake County Clay Company (inactive). This pit is located 2.2 miles east of Okahumpka and about two miles south of Lake Harris, in Sec. 13, T, 20 S., R. 24 E. Exposed in the pit are from 12 to 30 feet of cross-bedded

kaolin-bearing quartz sands that contain flat, quartzite pebbles up to three inches in length, and a small amount of mica. The kaolin content varies considerably but averages about 25 percent. Data are presented on the following sampes:

0-310 Commercially washed kaolin.

0-311 Gray white kaolin-.bearing sand from top of stripped bank.

0-312 Gray kaolin-bearing sand from dredge hopper.

0-319 Red overburden sand.





5
0-320 Wite drude kaolin-bearing sand from water's edge.

0-460 Kaolin-bearing sand from auger -boring located near the company's
"Boring # 20."

0-468 Commercially washed kaolin from drying shed rewashed in laboratory. The chemical analyses of samples 0-319, 0-460, and 0-468, see Table I, and the physical test data for all the samples, Table II, indicate the kaolin to be of the same high quality as that produced in Putnam County. Although the kaolin has a slightly inferior color, this characteristic is likely to be unnoticed in bodies containing other clays.

2. The Florida China Clay Company (abandoned) property is situated two

miles east of Ocahumpka, about 0.1 mile east of Falatlakaha Creek and south of Florida Highway 46, in Sec. 13, T. 20 8., R. 24 E. The kaolin-bearing sand is somewhat finer grained and contains fewer pebbles than that found on the Lake County Clay Company's property to the East. The overburden averages less than six feet and the white kaolin-bearing sand varies from 12 to 30 feet in thickness.

Test data are presented on the following samples: 0-323 Crude material from the settling troughs.

0-324 Commercially washed kaolin.

0-342 White kaolinitic sand from auger boring located between mine and
plant.

0-461 White kaolinitic sand from auger boring located between mine and
plant.

0-462 White kaolinitic sand from auger boring located 100 yards northwest
of sample 6-461.

For chemical analyses of the composites of samples 0-461 and 0-462, see Table I: for physical test data on all the samples except 0-461, see Table II.

In color, this kaolin is inferior to that found on the adjoining Lake

County Clay Company's property, nevertheless, it remains sufficiently good for most ceramic purposes. The bonding strength is somewhat superior to, and vitrification begins at. a lower temperature than the kaolin from the adjoining





6

property. Although the kaolin was used successfully in the ceramic industry for many years, all of the production from this mine during the last years of its operation was purchased by the U. S. Rubber Corporation for rubber filler.

3. On the John Irwin property, situated on Florida Highway 450, 5.1 miles west of Umatilla, in Sec. 5, T. 18 S., R. 26 E., a road materials pit exposes kaolin-bearing sand. A chemical analysis of a washed sample from auger borings made to the depth of 20 feet is included in Table I, sample 0-352, and physical test data on this sample are given in Table II. These data indicate the quality of the kaolin to be equal to that found in Putnam County. MARION COUNTY

Most of the reported occurrences of kaolin deposits in Marion County are

contained in the logs of borings made by the U. S. Army Engineers along several proposed canal routes. These reported deposits are confined to the Lake Region and "The Scrub", the sand hills east of the Lake Region. Incomplete data are available on four localities.

1. On the property of M. B. Owens, located on the western edge of "The Scrub", about 17 miles east of Ocala and just west of Long Lake in the NW4 of Sec. 14, T. 15 S., R. 24 E., tan to red kaolin-bearing sand is exposed in a road material pit. The chemical analysis of a composite of sample 0-510 taken from borings made in the floor of this pit is given in Table I. The kaolin is

off-color and has low strength.

2 and 3. Samples of kaolin, obtained from auger borings in two road material pits located in the Ocala National Forest, were off-color and not high grade. These pits are situated: (1) west of Lake Kerr in the NW4 of Sec. 20, T. 13 S., R. 25 E., and (2) about 9 miles south of Florida Highway 40 in the SW of Sec. 32, T. 16 S., R. 26 E.

4. The reported occurrence of white kaolin-bearing sand in the excavations for the dam and power house three miles northeast of Oklawaha at Moss






7
Bluff, SW4 of Set. 2), T. 16 S., R. 24 E., has been confirmed. A sample from

the spoil bank yielded 25 percent kaolin when washed. PASCO COUNTY

Deposits of kaolin-bearing sands in Pasco County have not been verified. A test boring near the deposit reported by Be" southeast of Dade City encountered phosphatic clays. The chemical analysis of sample 0-438 which was taken from an auger boring on the E. D. Hughes property about four miles south of Dade City in the NW4 of Sec. 17, T. 25 S., R. 22 E., is given in Table I. This dounty lies outside the area mapped as containing kaolin-bearing sands. POLK COUNTY

Kaolin-bearing sands have been encountered in a number of wells in Polk County. These sands extend throughout the Lake Region of the county but they occur at depths varying from 50 to 200 feet below the surface. Because of the thick overburden, such deposits have no commercial value and no test data are available.


PUTNAM COUNTY

The Putnam County kaolins have been produced commercially for many years and they serve as standards of comparison for kaolins from other sources. All of the production comes from localities near Edgar and Crossley, however, numerous occurrences of kaolin are known in the western portion of the county. The greatest thickness of kaolin-bearing sand, 75 feet, occurs in the Edgar District. Here the average vertical section consists of 10 feet of soil and yellow sand overburden, 10 feet of tan to red kaolin-bearing sand, and 20 to.45 feet of gray-white kaolin-bearing sand.



1. Bell, Olin G., "A preliminary report on the Clays of Florida."
Fla. Geol. Survey 15th Annual Report, 1922-1923.





8
The Edgar Plastic Kaolin Company property covers a large acreage on both sides of the Atlantic Coast Line Railroad at Edgar, in Sec. 25, T. 10 S., R. Z3 E. Coarse, micaceous, kaolin-bearing sands that contain quartz pebbles up to three inches in length are exposed in the pit north of the railroad.

Data are presented on the following samples:

0-325 Overburden of the Edgar Plastic Kaolin Company pit.

0-326 White crude kaolin-bearing sand.

0-327 Commercially washed and dried kaolin.

0-464 Kaolin-bearing sand from auger boring located in abandoned portion
of pit.

0-469 Commercially washed and dried kaolin.

The high quality of this kaolin is indicated by the chemical analyses of samples 0-325, 0-464, and 0-469, Table I, and by the physical test data for all the above samples presented in Table II.

The United Clay Mines Corporation property consists of several hundred

acres lying north of the Atlantic Coast Line Railroad at Crossley Station, in Sec. 27, T. 10 S., R. 23 E. The kaolin is recovered from a 10-foot bed of relatively fine sand that contains little mica and very few pebbles. Three grades are produced: (1) Putnam standard high quality clay, (2) Lakeland clay which has a slight cream tint, and (3) Jasper, a slight salmon-colored clay. The high quality of these clays is indicated by test data on the following samples:

0-317 Red-stained kaolin-bearing overburden representing 18 feet.

0-318 Commercially washed and dried Lakeland brand.

0-357 Crude white kaolinitic sand from three 18-foot borings spaced in a
triangle with 1000-foot sides.

0-465 Crude white kaolinitic sand from auger boring located 150 feet north
of office.

0-470 Commercially washed and dried Putnam brand.

The chemical analyses of samples 0-317, 0-465, and 0-470, are given in Table I,





9
and the physical data on all the above samples in Table II.

The Foster Kaolin Company formerly- produced kaolin from a pit located about one mile south of Edgar, in Sec. 36, T. 10 S., R. 23 E. Although this company is inactive and the pit abandoned, some data are presented to record

the high quality of kaolin found at this locality in the following samples:

0-435 White kaolin-bearing sand from a 10-foot section on the south side
of pit.

0-436 Comercially washed and dried kaolin.

0-463 White kaolinitic sand from auger boring on south side of pit.

The chemical analysis for sample 0-463 is included in Table I, and the physical test data for all the samples are given in Table II.

The Eccles property located on the east side of Redwater Lake, about two miles south of McMeekin station and two and one-half miles southwest of Crossley, comprises 270 acres in the SE41 of Sec. 5, the SW1 of Sec. 4, and the NW4 of Sec. 9, T. 11 S., R. 23 E. The physical data determined on a sample obtained from an auger boring on this undeveloped property are included in Table II, sample 0-466. This boring encountered 14 feet of overburden and 10 feet of white kaolin-bearing sand which was sampled. The tests indicate the

kaolin to be near standard grade, however, it does have a slightly inferior color and a little greater drying shrinkage than the commercial grades of Putnam County kaolins.


SANTA ROSA COUNTY

White kaolin-bearing sand is exposed in the floor of a gully near the east bank of Weaver Creek on the "Y. P. S." tract, seven miles southeast of Milton, in Sec. 2, T. 1 S., R. 27 W. The chemical analysis, see Table I, sample 0-450, and the physical data, Table II, indicate this kaolin to be similar to the Lake County material.





10
WALTON COUNTY

Kaolin-bearing sands occur on the H. C.. Weller property which lies on

both sides of Florida Highway 285, about four miles south of U. S. Highway 90, in the north half of Sec. 6, T. 2 N., R. 21 W. An auger boring located 200 yards southwest of the water tank on the west boundary line between the Weller property and the Choctawhatchee National Forest, encountered white kaolin-bearing sand from 12 feet below the surface to 30 feet. Although the physical data determined on this sample, see Table II, sample 0-330, are similar to those of the Lake County kaolins, the kaolin yield of the sand is too low to be considered for commercial development.

Two miles east of De Funiak Springs on U. S. Highway 90 white kaolinitic sands were encountered in a well on the David R. Thompson property, Sec. 30, T. 3 N., R. 18 W. Sample 0-413 consists of the kaolin-bearing sand recovered from the bottom .; six feet of a 25-foot well and from an auger boring located 20 feet east of the well. Both the well and the auger boring bottomed in kaolinitic sand. The chemical analysis of this kaolin is listed in Table I under sample 0-413 and the physical data are given in Table II. The kaolin has excellent color, high plasticity, low shrinkage and moderate strength. It compares favorably with the Putnam County kaolins. WASHINGTON COUNTY

Both Cooke-/and Vernon?/report kaolin-bearing sands at Chalk Bluff, 4.5 miles north of Vernon in Sec. 7, T. 3 N., It. 14 W. Here two beds of creamwhite clay, one, three feet in thickness, the other, four feet in thickness



1. Cooke, C. Wythe, "Geology of Florida".
Fla. Geol. Survey Bulletin No. 29, 1945.

2. Vernon, Robert 0., "Geology of Holmes and Washington counties, Florida".
Fla. Geol. Survey Bulletin 21, 1942.






13.

are exposed, These clays are of the stoneware type. Data are presented on the

following samples:

0-399 Cream-white clay from lower (4-foot) bed exposed at base of outcrop.

0-418 Auger sample representing top 21 feet of lower (4-foot) bed.

0-522 Auger sample representing upper (3-foft) clay bed.

Chemical analysis of samples 0-399 and 0-522 are given in Table I, and physical data determined for samples 0-399 and 0-418 are included in Table II.







12
Table 1. Chemical Analyses of Florida Plastic Kaolins and Claya (Downs Schaaf analyst)


County C L A Y JACKSON L A K E

Fore- Seale Florida China Irvin
Locality moat Prop- Lake County Clay Clay Corpora- PropProD.' erty Comp ytion erty
Crude Crude Over- Crude Lake Crude Crude Crude
Material White White burden White Brand White White White
Sample 0-467 0-400 0-319 0-460 0-468 0-461 0-462 0-352
_umber

S102 46.10 47.82 42.50 46.31 46.22 46.81 45.19 46.83
A1203 37.81 36.08 36.56 37.63 37.11 31.65 37.61 37.43
Fe203 0.49 0.65 2.90 0.41 0.35 0,11 0.29 0.10
FeO 0.21 0.22 0.11 0.23 0.22 0.07 0.28 0.21

Mgo 0.08 0.09 0.27 0.08 0.10 0.68. 0.11 0.12
CaO 0.35 0.35 0.77 0.34 0.59 1.28 0.50 0.38
Na2O trace 0.01 trace trace trace trace trace trace
K20 0.16 0.29 0.07 0.11 0.14 0.29 0.08 0.15

H20 0.98 1.01 1.83 1.08 1.50 5.81 1.53 1.10
H20 + 13.25 12.55 13.50 13.11 12.92 11.01 3,3.20 13.01
C02 0.37 0.38 0.40 0.34 0.41 0.56 0.36 0.38
TiO2 0.23 0.64 0.77 0.47 0.36 0.74 0.70 0.22

Zr02 trace trace trace trace trace trace trace trace
P205 0.08 0.11 0.35 0.14 0.28 1.10 0.32 0.11
SO3 0.01 0.05 0.18 0.02 0.01 0.03 0.05 0.07
S (FeS2) trace trace trace trace trace trace trace trace

Cr203 none none none none none none none none
V203 none none none none none none none none
HnO 0.01 0.01 0.01 0.01 0.01 0.02 0.01 0.01
BaU none none none none none none none none

C(organic) 0.07 0.02 0.0' 0.01 0.08 0,03 0.01 0.08

TOTAL 100.20 100.28 100.29 100.29 100.30 100.19 100.24 100.20


Trace indicates quantities less than 0.005 percent.







13




MARION PASCO P U T N AM.

Owens Hughes Poster
Prop- Prop- Edgar Plastic-Kaolin United Clay.Mines Kaolin
erty erty Coman rp6ration Mine
Crude Fhosphatic Over- Crude E.P.K. Ovei'- Cru'de : Ptnam Crude White Clay burden White Brand burden White Brand White'
0-510 0-438 0-325 0-464 0-469 0-317 0-465 0-470 0-463

46.44 21.42 44.99 47.70 45.81. 43.34,. 47.21 ,46.04 46.80
37.04 29.10 37.21 36.88 36.5Q 37.40 37.55 .37.98 37.19 0.14 4.44 0.34 0.21 0.40 0.95 0.11 0.09 0.50
0.14 0.04 0.22; 0.24 0.22 .0.05.. 0.22 0.20 0.21
0.08 0.06 0.09- 0.11 0.08 0.05 0.08 0.08 0.09.
0.57 5.25 0.60 -0,36 0.81 0.60 0.32 0.36 0.36
0.01 0.79 trace: trace track trace trace trace trace
0.05 0.40 0.07 0.15 0.22 0.07 0.08 0.20 0.10
2.00 1.68 2.30 0..93 2.20 2.54 0.98 1.41 1.11
12.66 14.80 12.90 12.80 12.75 13.77 13.10 13.17 13.03 0453 0.68 0.50 0.38 0.39 0.38 0.33 0.38 0.37'
0.32 1.05 0.55 0.41 0.43 -0.65 0.18 0.15 0.35
trace trace trace trace '0.015- trace trace trace trace 0.07 20.10 0.18. 0.11 0.38 0.18 0.09 0.08 0.15
0.03 0.04 0.05 0,01 0.02 0.05 0.01 0.04 0.02
0.01 trace trace' trace trace trace trace trace trace

none none none none none none none none none.
none none none none none none none none none
0.02 0.01 0.02 0,.01 0.0. 0.01 0.01 0.01 0.01
none. none none none none none none none none

0.01 0.01 0.02 0,02 0.08 0.01 .0 0.05 0.01

100.12 99.87 100,04 100,32 100.315 100.05 100.31 100.24 100.30






14
Table 1. continued



County SANTA WALTON WASHINGTON
ROSA

LocaUty Y.P.S. Thompson Chalk Hill
Tract Property
Cruds Crude Lower Upper
Material White Whito ClaV Clay

0-450 0-413 0-399 0-522

S102 45.95 47.50 44.84 .44.01
A1203 37.55 37419 37.56 38.10
F:23 0.28 0.?0 0.88 0.57F 0.14. 0.?2 0.25 0.25

Kg0 0.04. 0.Q8 0.10 0.14
Ca0 0.48 0.35 Q.36 0.48
Na2O 0.01 0.01 0.01 0.04
K2 0.07 0.10 Q.28 0.22

H 0 1.81 0.93 ,.23 1.H 0 13.01 12.97 13.07 .13.40
C 0.34 0.35 0.37 0.43
TI 0.25 0.25 1.07 1.20

ZrO2 trace trace trace trace
P205 0.11. 0.12 0.15 0.15
S 0.14 0.01 0.04 0.03
3SFeS2) trace trace trace trace

Cr203 none none none none
V23 none none none none
Mn 0.01 0.01 .Q.01 0.02
Ba none none none none

C(organic) 0,01. 0.. .01 0.01

TOTAL 100.20. -100.30 100,23- 100.16


Trace indicates quantities less than 0.005 percent.





15
Table 2. Physical and Ceramic Data of Florida Plastic Kaolins and Clays (Frank Westendick analyst)

County C L A Y JAC'KSON
Seale
Locality Foremost Property Property
Crude Crude Washed Crude Crude Washed
Material White White Kaolin White White Kaolin
S__le Number 0-33 0-354 0-355 0-467/ 0-400
Screen analysis
+35 mesh 27.0 53.0 0 24.6 14.8 0
-35 + 100 55.4 32.6 0 60.6 58.3 0
-100 + 200 4.4 2.0 3.9 2.2 7.8 0.41
A Mica 0.1 0.5 0.1 0.3 0.5 0
% Kaolin 13.1 11.9 96.0 12.1 18.6 99.6
Forming and drying
Water of plasticity 41.8 37.8 45.4 43.8 43.3 46.4
Shrinkage
Volume 21.4 18.3 22.4 21.0 17.3 21.0
Linear (Cilc.) 7,7 6.5 8.1 7.6 6.1 7.5
Linear (Meas.) 7.0 5.7 g 6.9 5.7 6.7
'dashed color white white W white white white
Slaking time (Min.) 3.0 4.0 6.0 4.5 16 8.5
Transverse strength 245 290 310 296 290 305
Firing behavior
Ignition loss
Cone 010 (950*C) 13.9 14.2 15.1 14.7 13.0 13.6
Cone 05 (1050*C) 13.9 14.3 15.0 14.5 13.3 13.7
Total shrinkage
Volume
Cone 010 (950*C) 30.9 29.2 31.7 30.4 25.1 29.6
Cone 05 (1050*0) 31.3 29.2 32.5 32.3 26.3 37.9
Cone 1 (1150*0) 31.3 30.4 39.3 38.1 26.8 38.7
Cone 7 (1270*C) 44.4 39.9 47.1 47.4 42.0 54.7
Cone 10 (1330CC) 50.6 47.7 53.2 53.9 43.9 56.8
Cone 15 (1433*C) 57.2 54.7 57.5 55.0 55.6 60.5
Linear (Calc.)
Cone 010 11.6 10.9 11.9 11.4 9.2 U1.0
Cuno 05 11.4 10.9 12.3 12.2 9.6 14.6
Cna 1 11,8 31.2 15.3 14.7 9.8 15.0
C(ne 7 ,L7.8 15,6 19.1 19.3 16.6 23.2
Cone 10 21.0 19.5 22.4 22.9 18.0 24.3
Cone 15 24.6 23,2 24.8 23.3 23.6 26.4
Absorption
Cone 010 28.5 30.2 32.3 31.8 34.7 32.1
Cona 05 28.1 28.7 31.0 30.6 34.1 26.6
Cone 1 27.3 28.0 19.1 23.1 33.8 26.3
Cone 7 18.5 23.3 15.9 16.2 20.0 10.2
Cone 10 12.4 17.2 9.2 10.2 16.4 8.1
Cone 15 5.0 5.2 6.7 7.7 5.4 1.0
Apparent porosity
Cone 010 47.3 47.0 47.6 47.1 48.9 46.2
Cone 05 46.6 46.9 47.2 46.6 48.7 43.0
Cone 1 43.1 43.6 38.1 39.9 48.9 43.0
Cone 7 34.8 39.5 31.2 31.4 36.2 22.7
Cone 10 26.2 34.7 21.0 21.9 31.3 .19.0
Cone 15 13.4 12.7 15.6 17.6 12.9 4,
Color light
Cone 010 white white cram white ?i a
Cone 05 white white white white white whie
Cone 1 white white white white white
Cone 7 white white white white white .
Cone 10 white white white white
Cone 15 white white criam w white
Transverse strength
Cone 010 210 370 240 250 260 1
Cone 05 -- -Cone 1 425 490 400 440 400 4
Cone 7 1980 2480 2100 2140 2160
Cone 10 2710 3020 2690 2860 2830
Cone 15 2980 3210 3140 3290 2950

Steel hard at Gone 33 22
ZRIrMLtri CMn 1~v3+ 33+ 33133+





16



L A K E

Lake County Clay Company Florida China Clay Corporation
Crude Gray Over- Crude Crude Lake Crude Washed Crude Crude. White Crude burden White White Brand White Kaolin White White 0-311 0-312 0--319 0-320 0-460 0-323 0-324 0-342 0-462'

18;7 27.5 9.6 11.2 20.9 7.8 11.8 15.6
47.6 41.4 63.0 40.0 47.6 30.6 51.3 38.4
7.3 2.3 2.1 4.4 6.5 20.8 1.1 12.3 17.6
0.99 0.30 0.01 0.20 2.0 0.1 0.7 2.5
26.3 28.5 25.3 44.4 22.9 40.7 98.9 23.7 25.8

38.8 37.9 38.0 37.5 45.6 43.4 45.1' 41.4 45.0 43.0
16.6 18.5 17.0 18.7 19.4 23.2 18.5 20.6 18.9 22.9
5.9 6.6 6.2 6.7 6.9 S.4 6.6 7.2 -6.8 8.2
5.0 6.0 5.5 -6.0 6.0 7.7 6.0 6.7 6.0 7.3
white white red white white white white Nfle white
7 8 '27 14 8.1 12 14 10.9
310 235 320 270 255 310 380 310 355

14.6 14.3 13.1 13.6 14.5 14.2 15.1 15.1 15.5
14.4 14.5 13.5 13.9 14.3 14.3 15.4 15.0 15.9

26.8 24.7 30.0 24.3 27.4 28..8 29.0 30.9 30.9 31.4
27.2 26.3 30.6 28.8 29.2 34.2 33.7 32.5 36.2 33.4 44.0 26.8 31.2 28.8 31.7 33.7 44.0 34.6 41.3 46.1 45.7 34.2 51.9 51.9 50.4 44.-4 46.9 58.4 49.8 56.0
49.8 46.9 57.0 52.6 52.3 53.5 55.5 59.7 54.7 58.6 56.4 54.3 57.2 57.8 62.1 56.5 59.7 60.5 60.8
9.8 9.0 11.2 -8,.8 10,1 10.7 10.8 11.6 11.6 11.8 1040 9.6 11.5 10.7 10,9 13.0 12.8 12.3 13.9 12.6 17.6 9.9 11.8 10.7 12,0 12,8 17.6 13.2 16.1 18.9 18.4 13.0 21.6 2146 20M8 17,8 19.0 25.3 20.6 24.0 20.6 19.0 24.6 22,0 22.0 22.5 23.6 26.0 23.2 25.5 24.1 23.0 24.6 24.9 273 24.2 26.0 26.4 26.7

32.0 30.6 31.6 28.0 35.6 3301 35.4 30.2 33.6 32.7 30.8 27.8 30.1 26.7 34.1 33;5 33.6 30.0 31.6 31.8 29.2 27.9 22.3 25.8 32.1 29;9 29.2 22.6 13.2 19.1 13.2 22.6 8 9 9.4 13.3 20.3 15.5 11.8 11.6 7.1
9.1 12.9 4.1 '3.9 11.2 .1.5 7.0 4.5 9.5 5.8
0.8 0.8 0.4 5.3 0.6 3.4 3.5 3.2 3.8

46.3 45.8 45.8 42.3 50.0 47.3 50.1 45.9 48.6 48.2 45.9 43.0 45.0 42.7 49.0 46.;2 49.0 45.0 48.2 48.5 45.1 43.2 -39.1 41.6 48.1 45;9 45.1 38.9 28.4 33.7 30.1 38.7 18.0 22.2 27.3 37.0 32.1 27.7 24.0 16.0 11.7 27.1 5.6 6.8 24.0 30.0 16.9 11.0 21.0 14.4
3.2 3.4 -1.8 12.9 2.3 7.2 5.1 9.4 9.7
white white 1 ght white white white liht white O
whtQ white t white white' white white pink white white
white white 9 t white white white white white white
hite white te white white white white prM white e
white white white white e white
e k pw ple cream
~p~te white rC&wf white whte slarfe white wi
t purp~e Slate slate sla e gae slate r
-II green rpe
280 O 290 270 340
200 -. 350 460 1710 1650 1605
290.' 2870 3130 3150 3195
3060 37 320 3890 3985
s 503980 4160, 4525
S-~ -07 t
A ~.4" .




17
Table 2.continued


County LAKE P U T N A M
cont'd
Irvin.
Locality Prop- Edgar Plastic Kaolin Company
erty
Material Crude Over- Crude Washed Crude E.P. K.
WhJ.te burden White Kaolin White Brand 8svile 0-352 0-25 O-D6 0-327 0-464 0-469
Screen analysis
+35 mesh 22.2 32.1 13.6 30.0
-35 +1.00 57.7 42.1 49.9 39.5
-100 +200 6.2 .-5 ,6.9 1.1 9.1 1.3
% Hica 0.4 0.2 .2.0 1.1
A Kaolin 13.5 24.1 27.6 98.9 -'20.3 98.7
Forming and drying
4ater of plasticity 45.4 36.2 38.4 40.5 42.7 46.1
Shrinkage .
VolwuIe 17.5 17..4 16.9 19.4 19.4 21.0
Linear (Cac.) 6.2 6..2 .6.0 -7.0 7.0 7.5
Linear (Meas.) 5..2 5.7 5.5 6.2 6.3 7.0
Washed color white tan white white white white
Slaking time (Min.) 5.5 12.0 7.0 9.5 6.8 11.0
Transverse strength 250 210 280 250 310 320
Firing behavior
ignition loss
Cone 010 (9500C) 13.7 15.1 14.1 14.2 -14.7 15.3
Cone 05 (10500C) 13.9 15.3 14.4 14.6 -15.0 15.6
Total shrinkage
Volume
Cone 010 (950*C) 25.2 30.5 25.9 .25.5 -30.4 34.6
Cone 05 (10500C) 28.0 31.1 28.0 30.0 -31.9 35.4
C6ne 1 (11500C) 2,1,8 36.2 28.0 30.5 39.5 36.2
Cone 7 (1270C) 42,6 40.5 39.1 45.3 -45.2 49.4
Cone 10 (13300C) 50.6 54.3 44.4 49.4 .50.2 51.0
Cono 15 (1430*0) 55.2 58.4 54.3 55.1 56.1 58.0
Li:,ear (Caic.
C-n3 010 9.2 11.4 9.5 9.3 11.4 13.2
C- 05 10.4 11.7 10.4 11.2 12.0 13.5
C n3 1 10,6 13.9 10..4 11.4 15.3 13.9
Czne 7 17.0 15.9 15.,2 18.2 18.2 20.4
Cone 10 21,0 23.0 17.8 21.4 20.8 21.2
Con, 15 23.5 25.3 23.0 23.4 24.0 25.1
Absiorotion
Cone 010 35.6 31.6 30.6 31.0 31.2 27.4
Cone 05 33.0 31.0 30.1 29.2 30.1 27.0
Cone 1 31.1. 26.0 28.3 27.6 23.7 -26.2
Cone 7 19.7. 18.6 18.5 115.4 17.5 -13.7
Cone 10 13.0. 6.0 14.0 13.2 13.5 -11.6
Cohe 15 7.6 3.2 6.4 4.2 5.5 3.2
Apparent porosity
Cone 010 49.2 46.1 46.6 45.3 45.8 -42.7
Cone 05 47.4 46.0 46.8 45.3 45.1 -42.6
Cone 1 46.8 42.6 44.5 42.3 38.9 42.5
Cone 7 37.6. 32.4 33.7 30.0 32.0 27.6
Con3 10 27.8 18.9 28.1 27.6 '27.7 24.1
Cone 15 16.2 8.1 15.3 10.0 12.7 7.8
Color
Cone 010 white light white white white white
Cone 05 white white white white white
Cone 1 white white white white white
Cone 7 white white white white white+
Cone 10 white I white white white white
Cone 15 white e white p
Tranaverse strength
Cone 010 235 120 230 210 340 210 A.,
Cone 05 145 310 285 390
Cone 1 500 620 650 570 580 790
Cone 7 2170 2200 2090 2460 2130
Cone 10 2040 2860 2670 2590 2900 494Q
Con 15 -3080 2940 3290 260 I

Stools hard at con 4 4 4
I wtrnCqiae kmiz A .









PUTNAM continued

Eccle8
United Clay Mirnes Corporation Foster Kaolin Company Property
Over- -Lakeland Crude Crude Putnam Crude Washed Crude Crude burden Brand White White, Brand White Kaolin White White 0-317 0'3)18 .0-35' -4 -5 0-436 0-463 0-406

18.5 0 16.8 12.5 0 20.9 0 24.3 12.2
55.8 0 63.2 67.3 0 53.6 0 54.7 67.4
1.6' 0.9 2.2 1.9. 1.2 4.5 1.9 3.0 4.6
0.1 0 0.2 0.6 0 0.8 0 1.1 0.6
24.0 99.1 17.6 17.8 98.8 20.2 98.1 16.8 15.2

40.5 49.0 42.9 41.3 46.8 38.2 42.6 36.8 40.0
20.2 21.1 18.7 17.6 21.4 21.0 22.2 19.2 21.0
7.2 7.5 6.7 6.3 7.7 6.8 8.0 6.8 7.6
6.5 7.0 6.2 5.7 7.2 6.2 7.2 6.2 7.0
red c t white white white e tm e white white
9 4 5.2 6 7 9.5 7.9 7.3
280 320 265 235 230 320 280 305 255

15.1 14.4 13.6 14.8 15.3 15.1 15.3 15.1 15.1
15.3 14.6 14,2 14.9 15.5 15.3 15.7 15.3 15.2

30.6 29.2 23.9 28.6 28.8 28.0 28.4 28.1 32.9
35.0 34.6 29.2 29.1 28.4 30.6 31,7 30.6 34.6
35.4' 34.2 30.0 31.8 29.6 33.5 32.5 33.5 43.0
42.0 36.6 37.4 41.7 42.8 39.5 35.8 39.6 51.4
53.9 49.8 41.2 45.9 43.2 51.6 53.5 51.6 53.7
58.0 52.3 52.6 55.6 54.0 58.8 54.0 56.1

11.5 10.9. 8.7 10.6 10.7 10.4 10.5 10.4 12.5
13.4 13.2 10.9 10.8 10.5 11.4 11.9 11.5 13.2
13.5' 13.0 11.2 12,0 11.0 12.7 12.3 12.8 17.2
1.6.5 14.1 14.4 16.5 17.0 15.4 13.7 15.4 21.5
22.7 20.6 16.2 18.6 17.2 21.5 22.5 21.5 22.5
25.1 21.8 22.1 23.6 22.8 25.5 22.8 24.0

33.9 33.3 35.3 32.9 32.6 27.5 30.7 28.9 28.0
28.8 28.4 32.8 31.2 31.4 27.3 29.5 26.9 26.3
28.4 28.4 32.4 30.2 30.6 27.2 29.0 24.1 19.3
22.9 25.1' 23.0 20.5 21.6 20.2 25.9 17.3 10.1
8.7 15.9 19.6 16.5 19.6 8.9 9.0 7.1 7.1
3.8 10.0 8.6 9.0 3.6 3.0 3.9 5.5

47.1 46.4 49.8 47.8 46.2 42.8 47.1 44.1 44.4
44.f 42.8 49.4 46.9 44.3 42.8 47.5 42.7 42.4
42.7' 42.5' 49.4 45.6 44.4 42.2 45.6 39.9 34.7
38.9 39.0 39.4 36.4 38.1 36.1 42.9 31.6 21.0
17.9 31.2 35.7 31.3 34.8 18.7 21.1 16.1 15.4
8.8 22.6 18.7 20.4 9.0 8.0 9.5 12.6
aaLmonl white. white white white white white white $2j a. on white white white white white white white ceam white white white white white white white whitg
white white white white white white white
white white white white white white white !h e
white white -white white

340 200- 210 260 330 290 300
360 230 505 290 520 460 48o
660 4 4
1910 2209 2500 2420 2585 3090 27 2940 3170 3p6o 3200
$ ~ .~Y




39
Table 2. continued


County SANTA WA L T N WAHINGTON
ROS A W3-IOO
Locality .I.S Weller Thompaon
frlyt Prop- Chalk Hill
-Tract_____ ertv. Property
Material Crude Crude Gzrd Lower Upper
White White White Clay Clay
Sample 0-450 0-330 0-413 0-399 0-418
dcruen analysis
+35.mesh 35.1 54.9 54.0 0 0.
-35 +100 6.2 36.6 32.3 1.5 1.7
-100 +200 1.1 1.6 4.5 2.9 3.4
% Mica
% Kaolin .8.2 6.9 12.7 95.6* 94.9*
Forming and' drying
Water of plasticity 49.4 48.2 51.8 50.0 43.3
Shrinkage
Volume 24.7 19.4 18.3 22.6 18.3
Linear (Calc.) 9.0 7.0 6.5 8.2 6.5
Linear (Menas.) 8.5 6.2 6.0 7.5 6.0
Washed color white white white wit eCol
Slaking time (Min.) 8 16 14 22 26
Transverse strength 190 170 190 140 120
Fir'ing behavior
Ignition loss
Gone 010 (95000) 14.0 14.6 13.9 13.2 13.0
Cone 05 (10500C) 14.3 14.7 14.3 13.5 13.6
Total shrinkAge
Volume
Cone 010 (9501C) 30.0 2I .4 28.0 27.6 24.3
Cone 05 (1050'0). 32.9 32.1 30.9 30.5 28.8
'Cone 1 (11500C). 34.2 32.5 30.9 35.4 29.6
Conj 7 (12700C) 43.2 53.1 46.5 50.6 39 .9
Cone 10 (1330C) 55.1 56.4 50.6 59.3 58.8
Cone 15 (1430*0) 57.6 60.9 60.1 62.6 58.8
Lhnear (Calc.)
%ne 010 11.2 10.5 10.4 10.2 8.8
Cone 05 12.4 12.1 11.6 11.4 10.7
Cona 1' 13.0 12.3 11.6 13.5 11.0
;one 7 16.2 22.3 18.8 21.0 15.6
Cone 10 23.4 24.1 21.0 25.8 25.5
Cone 15 24.9 26.7 26.2 27.5 25.5.
Absorpton
Cone 010 35.2 35.1 36.8 33.4 35.6
Cone 05 34.4 -30.1 35.6 30.2 30.9
Cone 1 33.6 .30.1 35.2 2q.0 30.3
Cone 7 25.5 .13.5 19.8 15.6 17.1
Cone 10 12.5 8.4 15.5 5.0 7.1
Cone 15 3.7 3.7 5.1 3.4 6.2
Apparent porosity
Cone 010 50.0 48.8 49.1 45.4 50.0
Cone 05 50.3 .44.7 49.9 42.6' 46.2
Cone 1 50.0 44.5 49.4 41.9 45.5
Cone 7 42..6 28.0 35.4 30.8 31.6
Cone 10 27*.4 18.8 30.0 11.4'- 8.0
Cone 15 10.0 9.4 13.3 8.7 16,0
Cone 010 white white flesh fleoh
Cone 05 white white white flesh flesh'
Cone 1 white white white white white
Cone 7 white white white cream creaiT
Cone 10 white white white cra
Cone 15 Purple light light brown brown
Transverse strength white purple purple green green
Cone 010 210 220 210 220
Cone 05
Cone 1 340 380 320 450
Cone 7 1640 1860
Cone 10 1880 1880 1640 2630
Cone 15 2890

Seel hard at cons 4 4
oneware olay Mk Mai n





20

PART II


THE CLAYS OF NORTHERN FLORIDA

GENERAL STATEMENT.

This report deals primarily with the determination of the characteristics of common clays, in regard to their suitability for use in the manufacture of ordinary heavy clay products, chiefly common brick, face brick, and various kinds of tile. The area from which samples were taken is designated as Northern Florida and includes that portion of the State which lies north and west of the southern limits of Dixie, Gilchrist, Alachua, Putnam and Flagler counties.

The samples were collected in 1928 and 1929 by James H. C. Martens and were analyzed by Dr. Martens in the clay testing laboratory then operated by the Florida Geological Survey. Standard procedures were used in the determination of the data listed in Table 3: Physical and Firing Properties of Florida Clays. Dr. Martens found it necessary to classify the slaking properties as: "fast", "'medium" "slow", and "very slow", rather than to use standard data form because consistent results could not be obtained and in some cases the Glay cubes remained almost intact after more than two months immersion in water.

The clay localities reported in Dr. IMartens' manuscript are here grouped according to counties and the counties are arranged in "alphabetical order. The sample numbers used in the description of each deposit are the same as those listed in Table 3.


Description of Deposits by Counties

ALACHUA COUNTY

Campville

Location of pit: pne-half mile north of Campville on the Seaboard Air Line Railroad at the abandoned plant of the Campville Brick Company.






21

Section exposed:

1. Soil, loamy sand 2 feet
2. Clay, very sandy, light gray 6 feet
3. Sand, fine, white 3 feet
4. Clay, mottled gray and red 5 feet

Samples collected and tested:

0-216 Mottled gray and red clay representing bed 4.
0-217 Clay and sand representing beds 2, 3, and 4.

Utilization: Common brick; medium refractory brick.

Hawthorn

Location of exposure: One mile north of Hawthorn and one-quarter mile
east of the Seaboard Air Line Railroad on the H. D. Fry farm.

Section exposed: Four feet of red clay in field.

Sample collected and tested:

0-218 Red clay representing the four foot bed.

Utilization: A poor grade of common brick could be made from this clay.


BAY COUNTY

Panama Cit

Location of pit: On the farm of Jacob Godert, eleven miles east of Panama City and 1,000 feet north of new road to Wewahitchka.

Section exposed:

1. Overburden, grayish yellow sand
2. Light gray clayey sand 3 feet
3. Light gray clay 2 feet

Samples collected and tested:

0-154 Light gray clay, bed 3.
0-265 Mixture of two parts light gray clay, bed 3, with three parts of gray clayey sand, bed 2. Utilization: Suitable for face brick. CALHOUN COUNTY

Blountatown

Location of plant and pit: Southeast edge of Blountstown, at the Holmes





22

Brothers Brick Yard. Section exposed:

1. Soil overburden 6 inches
2. Alluvial clay 4 to 9 feet

Sample collected and tested:

0-103 Alluvial clay, bed 2.

Utilization: Common brick; may be suitable for pottery and tile.

Darling Slide

Location of exposure: At Darling Slide on the left bank of Chipola River, southwest of Blountstown. Section exposed:

1. Sand, grayish yellow 6 feet
2. Sand, clayey, orange 8 feet
3. Sloping bank, no exposure 8 feet
4. Clay, very sandy, yellow 4 feet
5. Clay, very sandy, dark gray 4 feet
6. Shell marl 20 feet

Samples collected and tested:

0-104 Dark gray clay, bed 5.
0-105 Yellow clay, bed 4,
UTILIZATION: Useless for the manufacture of any burned clay product.


CLAY COUNTY

Green Cove Springs

Location: North edge of Green Cove Springs at the abandoned pit of the
former Clay County Steam Brick Company.

Section exposed:

1. Soil, fine, light gray sand 1 foot 3 inches
2. Clay, mottled gray and brown 4 feet
3. Sand, fine, clayey, mostly
reddish brown 3 feet
4. Sand, fine, nearly white 2 feet

Sampjs. collected and tested:

0-201 Clay and clayey sand representing beds 2 and 3.
0-229 Clay, bed 2.





23

Utilization: A poor quality of common brick. Russell

Location of pit: One mile northeast of Russell Station near small branch of Black Creek at site of former Russell Brick and Tile Company.

Section exposed:

1. Top soil overburden 1 foot
2. Clay, grayish yellow 6+ feet

Sample collected and tested:

0-202 Grayish yellow clay, bed 2.

Utilizationt' Suitable for face brick, drain tile, and an excellent grade of common brick.

Middleburg

Location: An abandoned brick plant is located on the left bank of Black
Creek, two miles northeast of Middleburg and the abandoned pit
is about 0.3 mile north of the barge landing.

Section exposed:

1. Soil, fine, gray sand 8 inches
2, Clay, brown, sandy 2 feet
3. Clay, gray and brown, very tough 5 feet

Sample collected and tested:

0-208 Gray and brown clay representing beds 2 and 3.


Reserves: Clay is exposed throughout sections 1 and 2, T. 5 S., R. 24 E.,
on the highway from Doctors Inlet to Middleburg. The top of the clay is about 20 feet above Black Creek and little or no
overburden is present.

Utilization: This clay is suitable for face brick, common brick, drain tile and hollow ware.

DUVAL COUNTY

Dixton

Location of plant and pit: On the ltlantic Coast Line Railway at Dixton, near the west side of Doctors Lake. The pit of the abandoned Gamble and Stockton Company is situated between the railroad and the Lake.





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Section exposed:

1. Soil Thin
2. Clay, brown, sandy 3 to 4 feet
3. Clay, gray or blue-gray, tough 8 feet
Sample collected and tested:

0-205 Gray, blue-gray and brown clay representing beds 2 and 3.

Utilization: The Gamble and Stockton Company formerly produced face brick and common brick. The clay is also suitable for hollow block and drain tile.

ESCAMBIA COUNTY

Molino

(1) Location of plant and pit:, On the Louisville and Nashville Railroad, about one mile north of Molino at the site
of the former Dolores Brick Company.

Section exposed:

1. Soil, sandy and pebbly loam 1 foot
2. Clay, reddish brown, friable 3 feet
3. Clay, mottled brown, yellow and
gray, tough 5 to 6 feet
4. Sand 8 inches
5. Clay, gray mottled with brown
tough 4+ feet

Samples collected and tested:

0-189 Clay, gray mottled with brown, bed 5.
0-190 Clay representing average of beds 2, 3, 4, and 5.

Utilization: The Molino clay is suitable for hollow buidling tile and drain tile as well as common and face brick.

(2) Location of plant and pit: On the Louisville and Nashville Railroad about two miles north of Molino at site of former Build-with-Brick Company.
Section exposed:

1. Soil, gray loam 6 inches
2. Clay, sandy, yellow and red 3 feet
3. Clay, gray mottled- with light
brown, yellow and red 14+ feet

Sample collected and tested:

0-170 Clay representing beds 2 and 3





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Utilization: The Build-with-Brick Company manufactured common brick; t-he clay is also suitable for face brick, hollow building tile
and drain tile.


Century

Location: Road cut on U. S. Highway, adjoining the property of W. H.
Wiggins and one and one-half miles south of Century.

Section exposed:

1. Sand, orange 5 to 12 feet
2. Clay, mottled gray and brown 6+ feet

Sample collected and tested:

0-175 Clay representing bed 2.

Utilization: Suitable for common brick, face brick and drain tile. Pine Barren

(1) Location of deposit: On the McMillan Mill Company property, 500 feet northwest of Pine Barren Station. Section exposed:

1. Soil, sandy loam with few
pebbles 1 foot
2. Clay, mostly yellow 3 feet
3. Clay, gray spotted with red 5+ feet

Samples collected and tested:

0-183 Gray, tough clay, bed 3.
0-184 Average of 8 feet of clay, beds 3 and 5.

Reserves: In areal extent and thickness the clay beds are adequate for
comercial development.

(2) Location of deposit: On the McMillan Mill Company property, four
miles northwest of Pine Barren, clay exposed in gully adjacent to road.

Section exposed:

1. Black muck 3 feet
2. Sand, light gray, pdbbly 4 feet
3. Clay, light gray 6+ feet

Sample collected and tested:

0-185 Light gray clay representing bed 3.





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Utilization: Fired at orie 010 the clay is suitable for light colored facebrick. Above cone 3 the porosity is reduced to nearly
zero and the color becomes very dark.

(3) Location of out: Road cut 2.8 miles north of Pine Barren Creek. Section exposed:

1. Soil, loam 1 foot
2. Clay, mottled gray, red and
yellow 4 feet
3. Sand, fine, clayey, orange,
streaked with gray and yellow 3 feet
4. Clay, tough and plastic, mottled
brown and light gray 12+ feet

Samples collected and tested: 0-181 Clay and sand representing beds 2, 3, and 4
0-233 Tough, plastic clay representing bed 4.

Reserves: Ample an extensive deposit.

Utilization: Either the lower clay or the mixture is suitable for drain
tile and non-vitrified structural products. McKinnonville

Location: Clay exposed in roadside gully near base of slope on east side
of Boggy Creek, 0.8 mile west of McKinnonville.

Section exposed:

1. Sand with quartz pebbles 2 to 4+feet
2. Clay 5 feet

Sample collected and tested:

0-176 Clay representing bed 2.

Utilization: The clay has excellent working qualities and burns hard at
cone 010 for good common brick. It is also suitable for
face -brick.

Muscogee

Location: Various localities in the vicinity of Muscogee. Two typical
exposures are located:

(1) On the hillside south of railway crossing 2 miles east of Muscogee.

Section exposed:

1. Sand and orange clay with pebbles of sandstone 2 to 4. feet
2. .Clay, plastic, gray, pink and yellow 31 feet
3. Sand, clayey,. mottled gray, red and yellow 2 feet
4., Sand, yellow, cross-bedded, limonitic at top 3+ feet





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Sample collected and tested: 0-166 Plastic clay, bed 2.

(2) In out on Frieco Railway, 3 miles east of Muscogee. Section exposed:

1. Orange sand containing limonitic concretions 3 feet 2. Laminated to thinly bedded clay and fine sand 7 feet Sample collected and tested: 0-167 Clay and sand, bed 2.

Utilization: These clays would make an excellent light-colored face
brick, however, the size of the individual deposits is
limited.

Yniestra:

Location of exposure: Road cut on the Scenic highway at Yniestra.

Section exposed:

1. Sand, brown, loose 4 feet
2. Clay, red and gray 4 feet
3. Sand, yellow, coarse 1 foot
4. Sand, gray, clayey 3 feet
5. Clay, gray, sandy 6 feet
6. Clay, very plastic, gray and pink 3 feet 7. Sand, red, clayey 4 feet

Samples collected and tested:

0-165 Plastic clay, bed 6.
0-230 Clay and sand, a mixture of beds 2, 4, 5, and 6.

Utilization: The mixture is suitable for a good light colored face brick.
The gray plastic clay probably could be used for pottery, however, the overburden is excessive at this locality for
mining this clay.

McMillan

Location of deposit: The old workings of abandoned brick plant extend about 1500 feet along the east side of the Louisville and Nashville Railroad south of Pine Barren Station.

Section exposed:

1. Overburden, soil 1 foot
2. Clay, sandy 4 feet





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Sample collected and tested

0-186 Clay and soil representing beds 1 and 2.

Utilization: Suitable for a fair grade of common brick.


FLAGLER COUNTY

Bikes Prairie

Location of deposit: At side of drainage ditch on Bikes Prairie 2,000 feet south of St. Josephs landing on East Coast canal.

Section obtained by post hole auger:

1. Top soil, black, muckyclay 1 foot
;, Clay, gray to cream, calcareous 3 feet
3. Clay, gray, contains decayed
vegetation 8 inches
4. Marine shells and sand thickness not determined

Sample collected and tested:

0-224 Clay representing bed 2.

Utilization: The high lime content of this clay makes it worthless for fired products.

Black Point

Location of deposit: Near Black Point, approximately 31 miles westsouthwest of Bunnell in the southern portion of Sec. 17, T. 12 S., R. 30 E. Section exposed:

1. Soil, black, mucky clay 6 inches
2. Dark clay 4 feet

Sample collected and tested:

0-225 Dark clay, bed 2.

Utilization: Suitable for a fair quality of common brick, however, the clay contains too much water to be worked satisfactorily. Haw Creek

Location of deposit: The clay is found in vicinity of Haw Creek, southwest of Bunnell. Two localities are given to illustrate the general characteristics of the- deposit.

(1) A clay exposure in a roadside ditch, 500 feet north of Haw Creek, one
mile east and 0.2 mile south of Haw Creek Church.





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Section exposed.

1., Soil 8 inches
2. Clay 6+ feet

Sample collected and tested:

0-223 Clay representing bed 2.

Utilization: This clay contains no calcareous material and adequate reserves are indicated for commercial development. It is suitable for common brick, hollow block and drain tile.

(2) West side of Middle Haw Creek, 7 miles southwest of DuPont. Ed Roberts
abandoned brick plant.

Section exposed:

1. Gray loam 6 inches
2. Sandy clay, gray with streaks
of yellow near top 5 feet
3, Clay, gray, very plastic 4 feet
4. Sand, fine, gray 1 foot

Samples collected and tested:

0-226 Sandy clay, bed 2.
0-228 Clay representing beds 2 and 3.

Utilization: The sandy clay was dug by hand and used to make common brick. The mixture of plastic clay and sandy clay is suitable for face brick, hollow block and drain tile as well as coimon brick.

St. Johns Park

Location of deposit: The clay occurs below a thin soil overburden in the field opposite the post office of St. Johns Park and one-half mile east of the boat landing. Section exposed:

1. Fine, sandy, clay loam 1 foot
2. Clay 41sfeet

Sample collected and tested:

0-222 Clay representing bed 2.

Utilization: Suitable for the manufacture of common brick.


GADSDEN COUNTY

Havana

Location of pit: At abandoned Tallahassee Pressed Brick Company plant





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a 3jcent to Georgia, Florida and Alabama Railroad on the flood plain of the Ocklocknee River, Havana. Section exposed: About five feet of alluvial clay overlain by six inches of soil.

Samples collect and tested: 0-114 Clay from abandoned pit.
0-115 Clay from pit one-quarter mile west of abandoned plant.

Utilization: Formerly used to manufacture a good grade of common brick. Quincy

(1) Location of pit: One mile north of Quincy on the property of Floridin Company, Incorporated.

Samples collected and tested: (October, 1928)

0-153 Fuller's earth
0-152 Brown clay overburden 4 feet

Utilization: The analysis of fuller's earth is included for comparative
purposes. The overburden clay is suitable for common brick.

(2) Location: In road cut on west slope of the Little River valley, five
miles east of Quincy.

Section exposed:

1. Sand, brown, rather coarse 1 foot
2. Clay, weathered fuller's earth 2 feet 3. Clayey sand 2 feet
4. Pale-greenish clay containing
fine sand 3 feet

Sample collected and tested:

0-116 Clay and sandy clay representing beds 2, 3, and 4.

Utilization: The clay is suitable only for soft common brick.

(3) Location of deposit: Alluvial clay from valley flat of Little River, five miles east of Quincy, near Georgia, Florida and Alabama Railroad crossing. Section exposed in river bank:

1. Top soil, silty lovm 1 foot
2. Clay, very sandy 2.5 feet
3. Sand, fine with little clay 1.5 feet
4. Clay, tough, gray, with little
sand 2 feet





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Sample collected and tested:

0-f17 Average sample of beds 2, 3, and 4.

Utilization: Not suitable for burned products because of the excessive sand content and small quantity of uniform reserves.



Location of deposit: Midway.

Section in pit:

1. Soil and sand 2 to 4 feet
2. Clay 8 feet
3. Clayey sand with some marl 15 feet
4. Fuller's earth 10 feet

Sample collected and tested:

0-150 Light gray to yellowish, very fine grained clay, representing bed 2.

Utilization: The clay has poor plasticity, excessive air shrinkage and a
tendency to crack on firing. River Junction

Location of deposit: On flood plain of Apalachicola River, adjacent to
Louisville and Nashville Railway trestle crossing Apalachicola River, about one mile west of River Junction.

Section exposed in pit:

1. Clayey soil, dark brown 1 foot
2. Clay, brown, silty 3 feet
3. Clay, reddish silt 2 feet
4. Sand, water-bearing Thickness unknown

Sample collected and tested:

0-140 Brown and reddish silty clay representing beds 2 and 3.

Utilization: Used by State owned brick plant to make common brick. GULF COUNTY

Port St, Joe

Location of exposure: In roadside ditch seven miles north of Port St.
Joe on Highway No. 6 and a few feet north of the canal crossing.





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Section; exposed:

1. Yellowish-brown, clayey sand 2.5 feet
2. Clay, mottled gray and reddish, sandy in upper part; bottom not exposed 3 feet

Sample collected and tested:

0-118 Mottled gray and reddish clay representing bed 2.

Utilization: Suitable for manufacture of common brick.

Wewahitchka

Location of exposure: In a ditch on the roadside, 800 feet north of the Lake Grove ffunting and Fishing Club's club house on their property at the south end of Dead Lake.

Section exposed:

1. Sandy loam 1.5 feet
2. aluvial clay, mottled yellow
and red 2 feet

Sample collected and tested:

0-120 Mottled yellow and red clay, bed 2.

Utilization: Suitable for a fairly good grade of common brick.


HO4L0S COUNTY

Argyle, four miles east of

Location of deposit: About four miles east of Argyle and one-quarter mile downstream from Scott's Mill in a bluff on the left bank of Sandy Creek. Section exposed:

1. Sand, coarse, orange 2 to 25 feet
2. Sand, fine and clayey 12 fuet
3. Clay, dark gray to black 3 feet
4. Clay, gray, yellow and brown 3.5 feet
5. Sand, mostly fine grained 21 feet

Samples collected and tested:

0-137 Clay, bed 3.
0-138 Clay, bed 4.
0-231 Sand and clay, beds 2, 3, and 4.

Utilization: The mixture with sand, sample 0-231, is satisfactory for common brick.





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Ponce de Leon, 3.3 miles north of Location of exposure: About 3.3 miles north of Ponce de Leon in a prospect pit near foot of hill. Section exposed:

1. Red sand Minimum of 2 feet
2. Clay, grayieh-yellow 6 feet

Sam.ple collected and tested:

0-158 Grayish clay, bed 2.

Utilization: Has higher shrinkage than desirable but may be suitable for
good common brick or face brick.
Ponce de Leon, 4 miles west of

Location of exposure: In a gully just north of milepost 737 on the Louisville and Nashville Railway. Section exposed:

1. Sandy loam with few pebbles 1 foot
2. Fine, clayey sand, mostly red 5 feet
3. Clay, light gray and red 5 feet

Sample collected and tested:

0-197 Clay and clayey sand representing beds 2 and 3.

Utilization: The 10-foot section of clayey sand is suitable for common brick.


JACKSON COUNTY

Cottondale

Location of pit: Three miles south of Cottondale on the Kynesville Road at abandoned A. J. Barbour Brick Plant. Section exposed:

1. Overburden top soil 1/2 foot
2. Gray clay 7 feet

Sample collected and tested:

0-109 Gray clay, bed 2.

Utilization: Suitable for nearly white to light cream-colored face brick or common brick.





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Marianna

(1) Location of pit: About .two miles south of Marianna, on property of Florida Industrial School for Boys. Section exposed:

1. Sand, grayish-orange 1 foot
2. Sand, clayey, mottled gray,
yellow and red 6 feet
3. Clay, sandy, mottled gray,
yellow and red 5 feet
4. Clay, brown, with black
spots 4 feet

Samples collected and tested:

0-237 Average of entire section, beds 1, 2, 3, and 4. 0-121 Brown clay, bed 4.

Utilization: The mixture is not well suited for common brick and the lower clay, bed 4, has too high shrinkage for any
burned products.


(2) Location: Four miles northwest of Marianna on property of Marianna Limestone Products Company. Section exposed: Residual clay, above Ocala limestone. Sample collected and tested: 0-122 Dark red (oxidized) and pale grayish-green, residual clay.

Utilization: The 'clay has too high shrinkage to be of value





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Rt2uMd Lakeco
Location of exposure: Deep railway cut through hill north of Round Lake Station.

Section exposed:

1. Sand, light gray 3 feet
2. Sand, mottled red, yellow
and gray 4 feet
3. Sand, orange, cobroe with
quart$ pebbles 5 to 7 feet
4. Clay, pink, very plastic 6 to 7 feet
5. $and, light yellow to brown,
coarse 2 feet
6. Sand, clayey, dard red to brown l feet
7. Clay, mottled yellow and grayishred, sandy but plastic 2j feet
8. Sand, slightly clayey 5 feet

Samples collected and tested:

0-123 Pink clay, bedI 4.
0-241 Sand and clay mixture, beds 4, 5, 6, and 7.
0-242 Sand and clay mixture, beds 2, 3, 4, 5, 6, and 7.

Utilization: Soft, porous common brick.


JEFFERSON COUNTY

Wacissa

Location of deposit: One and one-half miles east of Wacissa near milepost 822 on the Seaboard Air Line Railway (line abandoned

Log of test boring:

1. Sand, light gray, fine grained 2 feet
2. Clayey sand, brown, fine grained 1/2 foot
3. Clay, mottled light gray and red,
containing fine sand 5 feet
4. Sand, white, fine grained 1 foot
5, Clay, crumbly, light gray 3 feet
6. Water-bearing limestone Thickness unknown

Sample collected and tested

0-263 Clay and sand, beds 2, 3, 4j, and 5, representing 91 feet of section.

Utilization: Rather porous common brick,





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LEON COUNTY

Woodville

Location of pit: Clay pit for road material, eight miles south of
Tallahassee and three-quarter mile north of Woodville, east side of highway. Section exposed in auger boring:

1. Overburden, fine grain sand grading into yellow sand at depth 3 feet
2. Clayey sand, yellowish-brown 1 foot
3. Clayey sand, mottled red and
gray 2 feet
41 Clay, gray with spots of red, yellow and brown, contains some sand 6 feet

5. Clay, gray and yellow lh feet
6. Limestone, water-bearing Thickness unknown

Sample collected and tested:

0-259 Clay and sand representing beds 2, 3, 4, and 5.

Utilization: Suitable for making common brick.


LIBERTY COUNTY

Alum Bluff

Location of deposit: Alum Bluff, approximately 3 miles north of Bristol.

(1) Section exposed: Seven-foot cut of brown clay resulting from the
weathering of the upper part of the shell-bearing bed, north end of Alum Bluff. Sample collected and tested:

0-100 Residual brown clay.

Utilization: Would make poor quality common brick.

(2) Section exposed: Sandy, silty clay above shell marl, 1/2 mile downstream from north end of bluff. Samples collected and tested:

0-101 Slightly weathered gray, sandy clay.
0-102 Unweathered, dark greenish-gray, sandy clay.

Utilization: No value, soft and friable when burned.





37
Bristol Landine

Location of deposit and abandoned plant: Near Bristol at Bristol Landing on the Apalachicola River. Section exposed: The old pit and river bank expose 5 feet of red and
gray clay with one foot or less of sandy, soil overburd..: ens

Sample collected and tested:

0-141 Representative clay from alluvial deposit.

Utilization: Suitable for common brick, face brick and drain tile.


Estiffanulga

(1) Location of deposit: At Estiffanulga Landing on the Apalachicola River, a bluff extends along the outside of- a large bend in the river for about one-half mile, Section exposed: Near the top of this bluff is exposed from 5 to 10 feet of alluvial clay.

Sample collected and tested:

0-143 Representative clay from upper clay layer at Estiffanulga Bluff.

Utilization: The clay has excellent working ahd drying properties and is suitable for face brick, common brick, hollow block ware, drain tile and red earthenware.

(2) Location of exposure: Along roadside 2.7 miles north of Estiffanulga Landing and 8.4 miles south of Bristol. Section exposed: Thin soil overburden and 3 feet of alluvial clay. The bottom of clay not exposed.

Sample collected and tested:

0-142 Representative sample from 3-foot exposure.

Utilization: This clay is suitable for drain tile, face brick, and common brick of excellent quality. NASSAU COUNTY

Callahan

(1) location of pit: On property of former Georgia-Carolina Brick company plant on the Seaboard Air Line Railroad near its intersection with the Atlantic Coast Line, Callahan. Section exposed in pit: The deposit worked is six to twenty feet thick with only a foot of overburden. The ground water





38

level is only two or three feet below the surface and it is necessary to pump water from the pit.

Sample collected and tested:

0-144 Clay from pit, probably more sandy than the average,

Utilization: Common and face brick and suitable for common structural materials where a vitrified product is not essential.

(2) Location of exposure: In roadside ditch two miles north of Callahan on U. S. Highway No. 1.

Section exposed: One. foot of sandy, soil overburden and at least five feet of clay.

Sample collected and tested:

0-145 Sample representative of clay exposed.

Utilization: Suitable for common brick, face brick and drain tile.

Boulogne

(1) Location of exposure: Highway cut at south end of the St. Marys River bridge on U. S. Highway No. 1, one mile east of 13oulogne.

Section exposed:

1. Sand, grayish-yellow 3 feet
2. Clayey sand, yellow 1 foot
3. Clayey sand, mottled
orange and gray 2 feet
4. Plastic clay, gray and red 5 feet
5. Sand, clayey, to base of cut 1 foot

Samples collected and tested:.

0-147 Plastic clay, bed 4.
0-264 Mixture of equal parts of clay, bed 4, with sandy clay, beds 2 and 3.

Utilization: Both the plastic clay and the sand-clay mixture are suitable
for common brick.

(2) Location .of deposit: On hillside of Pigeon Creek, 0.7 mile east of U. S. Highway No. 1 bridge across St. Marys River and nearly two miles east of Boulogne.

Section exposed:

1,; Sand, gray and yellow 2 feet
2., Clay, mottled red, gray and
yellow 6 feet
3., Clayey sand, yellow, gray and
red 15 feet





39
Sample collected and tested:

0-148 Clay representing bed 2.

Utilization: Either common or face brick of good quality could be made from this clay.

Orange Bluff

Location of deposit: Adjacent to St. Marys River at Orange Bluff.

Section exposed: Clay thickness unknown, thin, sandy, soil overburden.

Sample collected and tested:

0-149 Clay, typical

Utilization: Well suited for common and face brick.

Brickyard Landing St. Mgs River

Location of pit: Abandoned brick plant site four miles southeast of Kings Ferry.
Section obtained by clearing off natural bank and by auger:

1. Soil, sandy loam 6 inches
2. Clay, mottled gray and red 2 feet
3. Sandy clay, gray 6 feet

Sample .oliected and tested:

0-213 Clay representing beds 2 and 3.

Utilization: Well suited for common brick manufacture. OKALOOSA COUNTY

Milligan

Location: Roadside bank and ditch on east side of small creek valley,
2.3 miles west of Milligan on U. S. Highway No. 90.

Section exposed:

1. Sandy soil overburden 1 foot
2. Clay, upper portion brown to reddish and crumbley; lower portion gray mottled with red and yellow and fairly tenacious 7 feet
3. Fine clayey sand, mottled light
gray and yellow (bottom not exposed) 3 feet





40

,Samplea collected and tested:

0-193 Clay representing bed 2.
0-232 Clay and clayey sand representing beds 2 and 3.

Utilization: Both samples indicate the material to be satisfactory for
good, red, common brick. PUTNAM COUNTY

Springside

Location of deposit: Brick clay is exposed at a number of places in the vicinity of Springside. The sample was taken onehalf mile northeast of Springside Station. Section exposed: Auger boring encountered one foot soil overburden and four feet of clay. Sample collected and tested:

0-209 Brown Clay.

Utilization: Suitable for good common brick.

Woodburn

Location: In roadside ditch, 400 feet northwest of bridge over Rice Creek.

Section exposed:

1. Sandy loam overburden 1 foot
2. Sandy clay, mottled gray and
yellowish-brown 5 feet

Sample collected and tested:

0- 19 Sandy clay representing beds 1 and 2.

Utilization: Suitable for common brick.

Orange Mills

Location of clay exposure: In large drainage ditch adjacent to Highway 206, two miles northeast of Orange Mills. Section exposed:

1. Dark gray loam overburden 1 foot
2. Clay, upper portion dark gray; lower portion light gray, spotted with yellow, irregularly streaked with sand 51 feet
3. Fine gray sand 4 feet





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Sample collected and tested:

0-221 Clay representative of bed 2.

Utilization: Suitable for manufacture of good, red, common brick.

Hopkins Point

Location: Hopkins Point, about 4 miles south-southeast of Crescent City.

Section exposed by auger:

1. Overburden, dark clayey loam 6 inches
2. Gray clay (lower portion contains
a few calcareous concretions) 4 feet Sample collected and tested:

0-220 Clay representative of beds 1 and 2.

Utilization: With proper preparation suitable for good, red common brick. ST. JOHNS COUNTY

Hastings

LocAtion of exposure: In roadside ditch on State Highway No. 207, 500 feet west of bridge over Deep Creek and 1.4 miles east of Hastings Station. Section exposed:

1. Gray loamy, sand overburden 1 to lj feet
2. Clay, mottled gray and brown 4 feet

Sample collected and tested:

0-210 Clay representing beds 1 and 2.

Utilization: Suitable for good grade of common brick.


SANTA ROSA COUNTY

East Branch Coldwater River

Location of exposure: In section 8, township 4 north, range 27 west, on right bank of East Branch of Coldwater River. Section exposed:

1. Overburden, sand and fine
grAvel 10 feet
2. Clay,, light gray and yellow 3 feet
3. Clay, gray, with pyrite
concretions 3 feet





42

4 Clay, light red 41 feet

Samples collected ,and tested: 0-106 Light gray clay, bed 2.
0-107 Gray clay. bed 3.
0-108 Light red clay, bed 4.

Utilization: All suitable for good face brick or common brick either alone or mixed with other clays. Allenton School

Location of pit: Twelve miles north of Milton and a few hundred feet west
of Highway No. 87 at site of temporary brick plant oper. ated in 1922 by G. H. Murphy, Glendale.

Section exposed:

1. Sand overburden 1 to 2 feet
2. Brown sandy clay 2 feet
3. Gray clay (bottom not exposed) 4 feet
Sample collected and tested:

0-173 Clay representing beds 2 and 3.

Utilization: Common brick.

Crow Bridge, West Branch Coldwater River

Location of exposure: In bluff and roadside gully on right bank of West Branch Coldwater River a short distance downstream from Crow Bridge on Highway No. 87, approximately 11.5 miles north of Milton. Section exposed:

1. Sand overburden minimum thickness 3 feet 2. Gray clay, tough and laminated 8 feet 3. Limonitic sandstone 1 inch
4. Ocherous clay 8 to 12 inches

Sample collected and tested:

0-174 Gray clay, bed 2.

Utilization: Suitable for common or face brick, hollow block or drain
tile.

Milton

(1) Location of deposit: -On Kehoe farm, 2} miles northeast of Milton, 200 feet west of west bank of river.





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Section expdsed:.1. Dark gray loam soil overburden 1 foot 2.- Brown silty clay 2 feet

Sample collected and tested:

0-139 Brown alluvial clay, bed 2.

Utilization: Suitable for common and face brick.

(2) Location: Abandoned brick yard site near residence of C. T. Brown, on west bank of Blackwater River, five miles northeast of Milton.

section exposed:

1. Soil overburden, grayishyellow loam 1 foot 3 inches
2. Clay 3 feet
3. Clayey sand, gray and brown 2 feet

Sample collected and tested:

0-160 Clay, bed 2.

Utilization: Suitable for excellent light colored face brick.

WALTON COUNTY

Paxton.

Location of deposit: One-quarter mile south of the railroad at Paxton.

Section exposed in gullied ditch:

1. Overburden, grayishyellow sand 1 foot
2. Coarse orange sand 2 feet
3. Silty clay, gray, red and orange 7 feet

Sample collected and tested:

0-195 Silty clay, bed 3.
Utilization: Suitable for light colored face brick or common brick.



Location of bed sampled: At a spring one 'mile east of Red Bay post officA

Section exposed: Measured section not taken because overburden is too heavy for commercial exploitation of clay. Sample collected aftd tested:





44
O-136; Dart unweathred. clay representing first two feet above top of fossiliferous shell marl. Utilization: Suitable for common brick.


Location: In road cut four miles southeast of Argyle on the road to
Knox Hill.

Section exposed:

1. Soil overburden 8 inches
2. Clay (bottom not reached 5 feet

Sample collected and tested:

0-157 Clay representing bed 2.
Utilization: None.


WASHINGTON COUNTY

Caryville

Location of exposure: At Caryville from borrow pit along approach to bridge across Choctawhatchee River. Section exposed:

1. Overburden, gray and yellow
sand 1.5 feet
2. Alluvial clay 4 feet

Sample collected and tested:

0-198 Alluvial clay bed 2.

Utilization: Suitable for common brick.

Chipley

Location of plant and pit: Two miles southwest of Chipley at brick plant of Peaden Materials Company (formerly Hall Brick Yard).

Section exposed:

1. Overburden 1/2 foot
2. Gray clay 3 to 6 feet

Sample collected and tested:

0127 Gray qlay, bed 2.





45
Utiliiatien LigIegray pznk or cream-colored face brick, common brick,
or semi-refractory brick.. Vernon

(1) Location of plant and deposit: One mile south of Vernon at site of abandoned Vernon Brick Company. Section exposed in pit: Not measured but the 4- to 5-foot layer of redcolored clay bed with sand above and below it was sampled.

Sample collected and tested:

0-124 Red clay.

Utilization: Will make good common brick.

(2) Location of exposure: Three miles southeast of Vernon on south side of Cravey's Mill Creek. Section exposed: Measured section not available. Light gray clay
streaked with red is probably thicker than three feet. Sample collected and tested:

0-126 Very plastic light gray clay..

Utilization: Suitable for smooth light-colored face brick.

(3) Location: Exposed in road cut three miles south of Vernon on road
to Greenhead.

Section exposed:

1, Soil, loose sand 1.5 feet
2. Sandy clay, dark red 2 feet
3. Clay, red and light gray 4 feet
4. Clayey sand, yellow and
light gray 5+feet

Sample collected and tested:

0.246 A mixture of clay and sand representing beds 1,2, 3, and 4.

Utilization: Suitable for face brick or common brick. Wausau

(1) Location: Road material clay pit at Wwusau, 800 feet west of
Wausau Station.

Section exposed in pit:

1., Sandy clay soil 6 inches





46

2. Gray clay with some red and
brown 4 feet
3. Yellow sand 8 inches
4. Light gray and pink clay 2 feet
5. Sand 3 feet

Samples collected and tested:

0-128 Gray clay, bed 2.
0-129 Gray and pink clay, bed 4
0-251 Mixture of four parts 0-128; two parts 0-129 and four parts sand, bed 5.

Utilization: Either clay or the mixture make attractive light-colored,
face brick.

(2) Location: Roadside gully 2.7 miles west of Wausau on the Vernon
road.

Section exposed:

1. Soil, coarse orange sand 6 inches
2. Clayey sand, reddish orange 6 feet
3. Micaceous clay, light gray 9 feet
4-. Sand ?

Samples collected and tested:

0-248 Light gray clay, bed 3.
0-249 Clay and sand representing beds 2 and 3.

Utilization: Both have poor plasticity but are probably suitable for
common brick.

(3) Location: Two miles southwest of Wausau Station on the road to Lynn Haven. Section exposed in roadside ditch about half way
up hillside.

Section exposed:

1. Soil, sandy clay 6 inches
2. Clay, mostly red 2 feet 6 inches
3. Clayey sand, gray and yellow 3 feet
4, Clay, gray, laminated 3 feet 6 inches
5. Sand, gray and yellow 3+ feet

Samples collected and tested:

0-130 Red clay, bed 2.
0-131 Gray clay, bed 4.
0-254 Sand-elay, mixture of beds 2, 3, 4, and 5.

Utilization: Not suitable for clay products other than inferior common brick.






47

(4) Location: Wine -miles northeast of Wausan on road to Chipley in
.roadelde ditch on east. side of .hill..

Section exposed:' Clay is exposed in ditch for several hundred feet and red sand alternates with red clay with no apparent regularity. SAnmple collected and tested:

0-156 Represents three-foot thickness of red clay with only a few inches of soil overburden. Utilization: Suitable for red connon brick.





















I





48
Table 3. Physical and Firing Properties of Florida Clays (J. H. C. Martens analyst)

County A L A C H U A B A Y C A L H 0 U

3Mle Number 0-216 0-21 -218 -14 0-103 0-104
Physical Properties
Plaaticity Fair Good Fair dood Poor Excel. Poor
Water of plasticity % 68 35 37 46 37 36 25
Linear air shrinkage % 16.6 10.9 6.6 6.4 6.6 8.5 2.0
Modulus of Rupture Cracked 270 160 210 180 290 180
Slaking test Fast Fast Medium Fast Fast Fast Slow
Color Grayish Light Red' Very Very Light Dark
pink pink light light brown gray
gray gray.
Firing behavior
Linear shrinkage %
Cone 010 (950C) 4.5 0.5 1.0 1.0 0.0 -0.5 -2.0
Cone 05 (10500C) Cracked 1.0 1.0 2.5 0.0 0.5 -0.5
Cone 03 (1090*C) Cracked 1.0 2.5 3.5 1.5 2.5
Cone 1 (11500) 1.0 3.0 5.0 2.0 3.5
Cone 3 (1190*c) Cracked 1.5 5.5 7.5 2.5 3.5 -0.5
Cone 6 (1250'C) 1.5 5.0 7.5 4.0 5.5
Absorotion% by weight
Cone 010 1.6 13.5 24.2 27.3 23.'2 19.7 18.6
Cone 05 13.7 21.8 27.1 22.9 20.2 20.2
Cone 03 13.6 20.0 23.7 21.1 14.1
Cone 1 13.5 19.6 18.4 18.8 12.8
Cone 3 11.3 15.1 12.3 16.1 12.2 20.4
Cone 6 11.7 15.4 10.6 15.7 11.0
Porosity %
Cone 010 6.7 33.5 42.3 42.3 40.0 36.9 41.6
Cone 05 33.6 43.0 43.8 41.0 37.3 40.9
Cone 03 33.5 40.2 34.8 39.5 32.8
Cone 1 35.0 38.9 31.7 37.2 30.5
Cone 3 30.8 32.3 27.4 35.5 29.0
Cone 6 31.2 34.1 23.3 34.6 28.7
Color
Cone 010 Light Pink Light White White Reddish Reddish
grayish brick orange orange
red red
Cone 05 Light Pink Grayish White White Reddish Reddish
grayish red orange orange
red
Cone 03 Light Buff Grayish White White Reddish
brown red orange

Cone 1 Buff Grayish White White Reddish
red orange

Cone 3 Gray Buff Grayish Light White Reddish Brick
red cream orange red

Cone 6 Cream Grayis Light White Brick
red cream red





49



N C L AY DUVAL E S C A MB I A

0-105 0-201 0-229 0-202 0-208 0-189 0-190 0-170 0-175

Poor Fair Fair Good Excel. Good Good Good Good Good 28 29 37 32 36 34 29 26 26 33
2.0 7.4 11.6 8.8 9.9 9.8 ..7.0 7.3 8.2 8.2
30 210 370 370 680, 460 340 440 550 200
Slow Fast Fast Fast Fast Fast Medium Medium Slow Fast
Yellow Grayish Grayish Grayish Brown Gray Yellow- Light Light Light
red red yellow ish brown brown brown
gray


1.5 1.5 1.0 0.5 1.0 0.0 0.0 0.5 0.0
1.5 1.5 1.5 1.5 2.5 2.0. 1.0 0.5 0.0
1.0 2.0 2.5 2.5 2.5 2.0; 2.0 1.5 2.5
1.5 3.0 2.$ 2.5 3.0 1.5 2.0 3.0 3.5
1.0 3.0 2.0 4.0 4.0 2.5 2.0 2.5 3.0
0.0 2.0 3.5 2.0 4.0 3.5 3.0 2.0 3.5 3.5

19.7 16.3 13.0 13.4 12.5 11.3 15.1 14.2 14.3 18.6 20.4 '14.5 13.0 10.9 8.1 6.6 14.1 12.1 11.1 18.0
20.5 '14.2 10.6 10.0 6.0 5.9 12.7 11.0 10.5 12.2
19.1 15.0 9.4 9.5 5.1 5.2 10.5 9.5 8.3 12.3
14.6 9.4 8.7 3.7 3.4 11.8 9.1 6.8 10.5
20.0 '14.5 9.3 9.5 4.1 3.8 8.1 7.7 6.3 9.8

41.7 32.6 32.3 32.9 32.9 25.6 32.3 30.4 28.8 34.6 40.9 34.2 32.3 30.5 24.4 16.3 30.8 26.9 27.4 32.4 39.3 35.9 29.3 29.4 21.5 19.7 28.7 27.8 26.8 30.3
33.4 27.9 '28.4 23.8 18.8 27.7 26.8 24.1 28.1
33.5 27.3 '28.0 16.8 15.0 25.4 25.2 20.9 27.5
40.0 34.1 27.3 29.4 17.7 15.8 24.6 24.7 20.0 26.3

Reddish Light Grayish Reddish Reddish Reddish Reddish Reddish Reddish Reddish orange brick red ., orange orange orange orange orange orange orange
red
Reddish -Light Grayish Reddish Reddish Reddish Reddiah Reddish Reddish Reddish orange brick red orange orange orange orange orange orange orange
red
Brick Light Grayish Reddish Brick Brick Light Brick Light Brick red brick red orange red red brick red brick red
red red red
Brick Brick Grayish Brick Brick Brick Light Brick Brick Brick red red red red red red brick red red red
red
Brick Grayish Brick Brick Dark Brick Brick Brick Brick
red red red red red red red red red

Brick Brick Grayish Brick Dark Dark Brick Brick Brick Brick red red red red red red red red red red




50
Table 3. continued



County ESCAMBIA continued

Sawvle Number 0-183 0-184 0-85 0-181 0-. 0-17 .0-166
Physical Properties
Plasticity Good Good Good GoQd Excel. excel. i6xcel.
dater of plasticity % 31 28 33 26 28 42 48
Linear air shrinkage % 9.8 9.0 9.0 7.1 8.4 7.5 9.3
Medulus of Rupture 420 '420 '580 '440 510 200 '270
Slaking test Medium Medium Fast Nedium Medium Fast past
Color Light Light Yellow- Brown Light Yellow Reddish
brown brown ish brown orange
gray
Firing behavior
Linear shrinkage %
Cone 010 (9500C) 0.0 0.0 0.5 0.0 0.0 0.0 1.0
Cone 05 (1050*C) 2.0 1.0 3.0 0.0 1.5 1.0 4.5
Co,1 03 (1090'C) 2.0 2.0 3.5 2.0 2.0 7.0 8.0
Cone 1 (11500) 3.0 2.0 5.5 3.0 2.5 7.5 9.5
'Cone 3 (11906C) 3.0 2.5 6.5 2.5 2.5 8.5 10.5
'Cone 6 (1250*C) 4.5 2.0 7.0 2.0 3.5 9.5 10.5
Absorption% by weight
Cone 010 12.6 14.4 15.4 14.5 14.1 25.9 23.0
Cone 05 9.9 11.1 9.9 '13.0 10.5 '21.2 14.5
'Cone 03 8.6 9.7 6.9 11.0 10.9 10.8 5.1
Cone 1 6.0 5.1 3.6 8.4 7.7 7.1 2.5
'Cone 3 5.3 7.9 0.3 6.6 5.6 5.7 0.4
Cone 6 4.9 6.3 0.2 7.2 5.4 2.7 0.4
Porosity%
Cone 010 26.3 30.4 29.1 29.8 28.9 41.2 39.2
'Cone 05 21.4 27.8 21.5 28.7 24.2 -37.2 29.5
'Cone 03 23.4 26.9 16.5 27.5 22.4 '23.6 13.2
'Cone 1 '18.3 23.8 8.0 24.2 20.0 15.9 7.5
*Cone 3 '16.5 '23.4 1.5 23.5 15.8 13.5 2.8
'Cone 6 17.8 21.9 1.3 22.5 16.7 7.0 2.3
Color
Cone 010 Reddish Light Buff Reddish Reddish-Reddish Light
orange brick orange orange orange grayish
red orange
Cone 05 Reddish Reddish Buff Reddish Reddish Reddish Light
orange orange orange orange orange grayish
orange
Cone 03 Reddish Reddish Buff Reddish Brick Light Light
orange orange orange red brick grayish
red orange

Cone 1 Reddish Reddish Reddish Brick Brick Brick Grayish
orange orange orange red red red orange

Cone 3 Brick Brick Dark Brick Brick Brick Brown
red red grayish red red red
red
Cone 6 Brick Brick Dark Brick Brick -Brick Gray
red red grayish red red red
red





51



-eF LA GL ER
0-167 0--165 9-20 0-86- 0-224 0-222 0-223 0-226 0-228 0-222

Good Excel. Fair Fair. Good Good Good. Fair Good Good
31 37 26: 25 39 30 26 24 29 25
6,0 7.4 6.2 .5.4 11.1 .9.3 6.9 6.4 8.8 6.6
140 200 210 170 380 530 660 380 420 370
Fast Fast Fast Fast Fast Fast. Fast Fast Fast Fast
Grayish Light .:Light Yellow- Gray. Dark Brown Gray Gray Brown pink grayish grayish gray gray
pink orange


0.5 1.0 -0.0 0.0 .1.0 2.0 0.5 0.5 0.5 0.0
0.5 3.5 0.0 .0.0 .1.0 .2.0 0.0 -0.5 1.0 0.0
2.5 6.0 0.5 -0.5 2.5 2.0 1.0 0.5 2.0 0.5
1.5 6.5 1.5 0.5 2.0 .1.0 0.5 1.5 0.0
1.5 $.0 2.5 1.0 Fu ed 1.5 1.0 0.5 1.5 0.0
5.0 9.0 3.0 0.5 gls .1.5 .1.0 1.0 2.0 0.5

20.1 20.8 16.7 16.5 16.9 12.0 10.8 10.4 10.6 10.8
17.7 15,6 15.3 15.5 ,17.0 10.5 10.0 11.1 9.0 11.0
15.0 9.9 13.8 15.9 .7.5 10.0 9.7 10.8 10.0 10.9
14.4 7.2 12.7 15.3 7.9 10.3 11.4 7.7 10.0
11.8 2.7 10.2 14.8 8.1 .9.5 10.7 7.9 12.1
9,9 0.8 9.0 14.7 8.6 10.3 10.9 8.5 8.3

34.3 36.1 33.0 34.7 32.5 30.5 30.3 33.2 29.4 31.8
34.8 30.7 33.1 34.7 33.6 29.2 30.4 30.7 27.8 32.0
32.4 21.4 31.5 34.3 22.0 95.7 29.5 31.1 25.7 31.5
31.8 17,3 31.2 33.7 -- 24.2 29.8 31.8 25.5 31.0
28.3 6.1 26.6 32.5 .- 24.6 29.6 28.7 26.6 30.7
26.3 3.1 24.6 33.6 24.9 30.0 31.2 27.0 25.8

Light Light Pink Reddish Reddish Reddish Light Light Reddish Light
grayish grayish orange orange orange brick. brick orange brick
orange pink red red red
Light Light Pink RedcliLh Re-ddish Reddish Light Light Reddish Light
grayish grayish orange orange orange brick brick orange brick
orange pink red red red
Buff Light Grayish Reddieh Yellow Brick Brick Brick Brick Brick
grayish pink orange rod red red red red
pink
Buff Light Grayish Reddish Brick Brick Brick Brick Brick
grayish pink orange red red red red red
pink
Buff Light Buff Reddish Brick Brick Brick Brick Brick
brown orange red red red red red

Buff Gray -Buff Light Brick Brick Brick Brick Brick
brick red red red red red
red *




52
Table 3. continued



County G A D S D E N

SaMle Number 0-114 0-115 0-153 0-152 0416 0-117- 0-150
Physical Properties
Plasticity Fair Fair' Fair Fair Poor Good Poor
Water of Plasticity % 32 26 127 27 35 24 54"
Linear alr shrinkage 'A .8.6 .7.1 13.8 .9.0 11.2 5.9 14'.3
Rodulus of Rupture 270 210 370 460 270 250 630
Slaking test Slow Slow Medium Fast Fast Fast Fast
Color Light Brown Light Brown Gr.ayish Yellow- Light
brown gray yellow ish gray
gray
Firing behavior
Linear Shrinkage %
,one 010 (950'C). 0.5 -1.0 6.0 0.0 0'.0 0'.0 1.0
Cone 05.(1050*c) 0.5 -.1.0 18.5 0.0 0'.0 0.5 4.0
gone 03.(1090'C.) 1.5 0.0 19.5 1.0 O'.5 -0*.5 5.0
gone 1. (1150*C) 1.0 0.0 1.5 0.0
Cone 3,(1190'C) 3.0 1.5 14.5 1.0 1.0 0.5 5.5
Cone 6.(1253"C) 2.0 0.5 -- 1.0 0.0
Absorption% by weight
Cone 010 17.7 14.2 Cracked 12.0 14.8 13.4 11.1
Cone 05. 17.3 14.3 0.9 12.8 15.6 14.3 7.1
Cone 03. 15.5 14.5 0.9 12.5 14.4 137 3.9
Cone 1 15.3 13.1 11.5 -' 135
Cone 3. 13.3 14.5 1.2 13.3 14.3 13.6 3.3
Cone 6. 12.8 13.0 10.3 14.3
Porosity >
Qone 011. 36.7 31.0 32.8 33.0 34.0 27.4
Cone 05. 34.8 31.9 5.5 33.5 34.3 34;2 18.7
Qone 03. 33.9 32.5 6.6 32.4 32.5 33.4 14.2
Qone 1 33.2 32.1 31.6 3364
qone 3. 30,3 32.3 18.9 33.1 25.3 32;4 14.4
Cone 6. 30.0 31.5 31.9 33.0
Color
Cone 010 Reddish reddish Buff Brick Orange Buff Buff
orange orange red

Cone 05 Reddish reddish Light Reddish Orange Buff Bif.f
orange orange brcwn orange

Cerne 03 Reddish Reddish Yellow- Brick Reddish Orange Buff
orange orange ish red orange
gray
Cone 1 Reddish Reddish Brick Reddish
orange orange red orange

Cone 3 Light Light Dark Dark Brick Light Buff
brick brick* grafish red red brick
red red yellow red
Cone 6 Light Light Dark Reddish
brick brick red orange
red __red





53



GULF HOLMES JACKSON'

0-140. 0-118 0-120 0137 0-138 0-231 0-158 0-197 0-109 0-23.7
Good Good Good Excel. Excel. Good Good Good Good Fair
29 38 32 39 51 28 40 46 40 39
6.0 7;4 6.8 11.2 14.1 7.0 13.2 9.4 8.7 10.1
290 100 100 1100 820 500 720 290 290 270
Slow Slow Slow Medium Fast Slow Medium Medium Fast Fast
Brown Brown Brown Dark Grayish Yellow- Grayish Brown Gray Brown
gray yellow ish yellow
gray


-0.5 1.0 0.0 1.0 1.5 0.0 0.0 1.5 2.0 1.0
0.5 1.5 0.0 0.5 2.0 0.0 1.0 2.5 2.0 2.0
1.0 2.5 2.0 3.0 3.0 1.0 3.0 4.0 2.0 5.5
2.0 4.5 3.0 1.0 4.5 7.5 4.9 5.5
1.5 6.5 3.5 3.0 6.0 2.0 5.0 7.0 9.5 7.0
2.5 6.0 3.0 1.5 6.0 7.5 8.5 6.5

18'.0 24.7 19.5 15.0 12.2 14.7 17.3 23.8 21.2 22.6 18.9 23.0 20.7 15.4 10.1 14.0 14.5 19.1 22.6 18.4 16.6 20.3 17.3 10.1 5.0 13.2 10.5 14.9 19.3 13.5
16.2 16.3 15.9 12.7 7.6 9.8 18.3 11.8
16.1 13.9 15.2 9.5 2.7 11.6 6.0 8.9 7.8 12.1
15.6 14.0 13.1 12.2 4.9 8.3 10.0 11.4

37.5 43.5 39.4 33.7 28.1 34.6 32.4 41.9 38.7 42.4 38.9 43.1 39.3 34.7 23.6 34.6 30.8 38.2 39.1 38.5 36.8 40.4 37.9 28.2 16.0 33.9 25.8 33.3 37.2 34.3 34.4 36.8 35.9 32.6 20.5 26.2 35.0 30.8
36.3 33.8 36.1 27.6 9.5 30.9 19.5 25.4 21.2 31.3
35.9 34.3 34.5 32.0 17.7 24.4 24.3 31.4
Reddish Light Light Reddish Reddish Reddish Brick Reddish White Brick
orange brick brick orange orange orange red orange red
red red
Reddish Light Light Reddish Reddish Reddish Brick Light White Brick orange brick brick orange orange orange red red red
red red
Light Light Light Reddish Reddish Reddish Brick Light White Brick brick brick brick orange orange orange red red red
red red red
Light Light Light Brick Brick Brick White Dark
brick brick 'brick red red red red
red red red
Brick Brick Brick Brick Light Brick Brick Brick Light Dark red red red red brick red red red cream red
red
Brick Brick Brick Brick Dark Brick Light Dark
red red red red red red cream red




54
Table 3. continued



County JLCKSON continued JEFF- LEON
.__ERSON
Sample Number 0-121 0-122 0-12 0-241 0-242 -6 0-2
Physical Pronerties
Plaaticity Good Good Excel. Good Fair Good Good
Water of plasticity % 66 50 58 30 26 31 26
Linear air shrinkage% 17.5 14.8 9.8 6.1 5.4 8.6 8.6
Modulus of Rupture 560 440 110 140 40 210 280
)Iakng test Past Medium Fast Medium Medium Fast Fast
Color ied Dark Pink Red Red Brown Brown
red

Firing behavior
Linear shrinkage %
-Cone 010 (950*G) 4.0 2.0 .1.5 0.0 0,0 1.0 0.0
.Cone 05 (1050*C) 4.5 5.0 2.0 0.0 0.0 2.5 1.5
-one 03 (10900C) 10.0 .5.0 10.0 2.0 0.5 2.0 1.0
*Cone 1 (1150*C) 11.0 4.5 0.5 2.5 1.5
C'me 3 (11900C) 10.5 .7.0 15.0 .4.5 1.0 2.5 0.5
Cone 6 (12500C) 15.5 5.0 3.0 2.5 2.0
Absorptionby weight
C{ne 010 10.0 13.2 32.5 20.3 19.9' 14.9 17.1
Cone 05 10.5 10.0 32.5 19.3 18.7 14.8 13.1.
Cnne 03 1.6 6.7 15.8 17.1 17.8 14.1 12.8
Cone 1- .- 11.0 12.3 17.2 14.4 11.2
Cone 3 2.0 .5.9 .2.4 11.8 14.2 13.6 12.1
-Cmne A 0.9 11.3 14.0 13.8 11.8
Pmrosity ?
Cone 010 25.2 31.- 49.0 38.7 37.4 34.8. 33.6
Cone 05 23.6 23.6 49.1 31.3 p7.9 35.0 33.4
Cone 03 -9.1 24.8 32.7 36.7 32.0 34.0 33.8
Cone 1 26.3 33.9 35.7 34.0 31.7
Cone 3 7.2 20.2 7.0 30.8 32.5 32.5 32.0
Cont 6 2.3 30.7 33.1 33.3 32.5
Color
Cone 010 Red Reddish Pink Pink Pink Reddish Reddish
orange orange orange

Cone 05 .ed Reddish Pink Pink Pink Reddis8 Reddish
orange orange orange
Cone 03 Prown Brick Pink Pink Pink Brick Orange
red red

Cone 1 Pink Grayish Pink Brick Orange
red red

Cone 3 Brown Brick Choco- Grayish Grayish Brick Buff
red late red red red
brown
Cmne 6 Choco- Grayish Grayish Brick Buff
late red red red
brown






55



LIBEflTY N ASS AU

0-100 0-101 0-102 Q-141 0-143 0-142- .0-144 0-145 0-147 0-264

Fair Fair Good Excel. Good Good Good Good Fair Fair 41 26 25 42. 41 33 25 37 38 30
8.9 -4.0 .5.1 10.3 7.6 .6.9 8.6 11.2 11.7 7.6
310 220 490 520 180 290 230 390 580 240
Slow Slow V.slow Medium Medium Medium Medium Fast Medium Medium
Light Dark Dark Red Light Brown Brown Brown Light Light
brown gray gray brown brown brown


*0.0 -1.0 0.0 .0.0 1.0 .0.0 0.0 0.5 -0.5 0.0
0.5 -0.5 0.0 1.0 1.0 -0.5 0.0 1.0 0.5 -0.5
3.0 0.0 0.3 4.5 4.5 .2.5 1.0 3.5 2.0 1.5
2.5 0.5 3.5 .4.0 2.0 .2.0 3.0 2.5 1.5
.4.0 1.5 1.0 6.0 .6.5 2.5 3.5 3.5 2.5 2.5
2.5 1.0 10.5 8.0 3.5 2.5 3.0 1.5 1.5

21.2 -19.7 17.8 .18.0 25.8 -19.3 17.3 12.3 11.0 15.8
21.1 20.8 17.8 17.3 24.6 20.6 17.7 13.6 12.7 15.3 15.9 19.4 15.5 10.6 16.7 17.1 16.4 10.5 11.0 14.5 17.3 -19.7 9.9 17.0 16.9 16.7 9.5 10.3 14.8
15.2 -19.5 14.9 9.6 .12.2 15.7 15.0 9.5 9.3 14.0
15.6 20.3 9.1 12.6 14.4 15.7 9.6 8.6 13.9

40.7 38.1 36.9 36.6. 42.8 .37.0 37.0 31.6 31.0 34.5
40.6 40.6 37.3 35.5 .42.5 .39.0 33.1 30.2 35.1
36.5 40.0 35.7 29.8 35.3 .35.6 36.4 29.3 28.4 33.9
37.7 38.4 27.2 -34.4 .36.8 36.7 28.0 27.6 32.8
34.6 -38.3 34.5 .27.2 30.4 34.6 35.3 28.9 27.5 33.6
34.5 37.7 26.9 30.7 33.5 35.9 30.2 26.0 33.4

Reddish Reddish Reddish Light Reddish Reddish Reddish Light Light Reddish orange orange orange brick orange orange orange brick brown orange
red red
Reddish Reddish Reddish Reddish Reddish Reddish Reddish Light Reddish Reddish orange orange orange orange orange orange orange brick orange orange
red
Reddish Reddish Brick Brick Reddish Reddish Brick Ligh+. Reddish Reddish orange orange red red orange orange red brick orange orange
red
Reddish Reddish Brick Reddish Reddish Brick 3rick Reddish Reddish
orange orange red orange orange red red orange orange

Brick Brick Brick Brick Reddish Light Brick Brick Red Light
red red red red orange brick red red brick
red red
Brick Brick Brick Reddish Light Brick Brick Light Light
red red red orange brick red red red brick
red red




56
Table 3. continued



County NASSAU continued OKALOOSA P U T

Sample Number -148 -149 0- 0-193 0-32 0-209 0-219
Physical Properties
Plasticity Good Good Good Good Fair Good Fair
Water of plasticity % 39 32 32 36 35 30 29
Linear air shrinkage % 9.3 9.3 8.6 7.'6 7.3 9.5 8.0
Modulus of Aupture 250 610 640 230 210 530 520
Slaking test Medium Medium Fast Medium Fast Past Fast.
Color Brown Brown Brown Brown Brown Brown Grayish
yellow
Firing behavior
Linear shrinkage %
Cone 010 (9500C) 0.0 -0.5 0.5 0.0 0.0 0.0 0.0
Cone 05 (1050*C) 1.5 0.5 1.0 2.0 0.'5 0.0 -0.'5
Cone 03 (10900C) 3.5 1.5 2.0 4.0 2.5 1.5 0.5
Cone 1 (11506C) 3.5 2.0 2.0 4.0 3.0 1.5 0.b
Cone 3 (11900C) 6.0 1.5 1.5 5.5 3.5 1.5 0.5
Cone 6 (1250C0) 5.0 -0.5 3.0 5.5 3.0 1.5 1.0
Abaerption % by weight
Cone 010 20.1 10.4 16.3 23.0 21.7 11.4 11.5
Cone- 05 17.1 10.2 11.1 19.5 20.4 10.6 11.8
Cone 03 15.5 8.6 8.6 13.2 16.7 9.2 11.0
Conu 1 14.4 9.4 9.2 13.3 14.5 9.4 10,8
Cone 3 10.6 9.7 8.6 11.6 13.9 8.5 11.6
Cone A 10.1 9.1 7.9 11.6 14.2 8.4 10.8
Porosity I
Cone 010 38.6 29.0 38.3 40.6 40.0 28.8 33.0
Cone 05 39.0 29.0 31.1 38.5 41.0 28.6 31.5
Cone- 03 34.8 27.3 29.0 30.7 36.6 27.9 31.0
Cone 1 33.8 28.2 29.0 32.0 34.6 26.9 30.8
Cone 3 29.6 29.5 27.6 30.3 33.0 25.7 31.0
Cone 6 29.0 28.4 26.7 29.6 33.4 26.0 30.1
Color
Cono 010 Grayish Grayish fleddiab Light Light Reddish Brick
red reddish orange brick brick orange red
orange red red
Cone 05 Grayish Aeddish ReddisY Light Light Reddish Brick
red orange orange brick brick orange red
red red
Cone 03 Grayish Drick Brick Brick Brick Light Brick
red red red red red brick red
red
Cone 1 Grayish Brick Brick Brick Brick Light Brick
red red red red red brick red
red
Cone 3 Grayish Dark Brick Brick Brick Brick Brick
red red red red red red red

Cone 6 Light Dark Dark Brick Brick Brick Brick
brown red red red red red red





57



N A M ST. S A N T A R OS A
JOHNS .
0-221 0-220 0-210 0-106 0-107 0-108 0-173 0-174 0-139 0-160

Fair Good Fair Excel. Excel. Excel. Excel. Excel. Good 'Good
38 32 30 39 36 37 33 34 25 38
10.5 9.0 9.2 8.5 8.3 8.5 6.3 9.1 5.5 7.5
470 470 320 380 360 210 220 420 180 230
Fast Fast Fast Fast Fast Fast Medium Medium Medium PaBt Brown Yellow- Brown Light Gray Yellow Orange Light ]gY.ow- Light
ish cream brown gray gray
gray

0.5 1.0 0.0 0.5 2.0 0.5 0.0 0.5 -0.5 0.5
1.0 1.5 1.5 2.5 2.0 0.5 0.5 0.5 -0.5 1.5
2.0 2.5 0.5 6.5 7.5 4.0 4.0 2.5 1.0 3.0
2.0 2.0 0.5 6.5 6.0 4.0 4.5 3.0 0.0 3.5
1.5 .1.5 1.5 9.0 7.0 6.0 4.5 3.0 1.0 5.0
2.5 2.5 0.5 7.5 7.5 7.0 7.5 4.5 1.0 8.0

15.4 10.9 12.0 19.2 15.6 20.8 21.3 16.7 17.6 21.3 13.6 9.4 11.0 16.4 16.3 19,2 20.0 15.5 18.7 19.5 12.2 6.8 9.1 8.6 3.8 12.4 13.6 11.2 17.2 16.3
11.7 7.4 10.4 6.5 7.2 6.5 11.6 10.1 17.0 14.6
11.1 6.9 9.9 0.5 0.9 5.6 10.0 6.7 16.7 12.1
11.3 7.9 10.1 0.0 065 6.0 6.0 5.1 15.4 8.9

34.8 28.0 33.0 33.3 33.3 35.9 37.6 31.4 34.6 36.2 33.4 26.1 31.0 30.0 30.3 32.6 37.5 31.0 36.1 36.5 34.0 23.2 31.0 19.4 10.3 26.3 29.0 25.0 35.5 31.1 31.1 24.4 30.0 15.2 16.8 15.2 27.4 24.1 36.0 30.2 31.7 23.8 28.8 1.2 3.4 13.2 24.4 21.2 35.3 26.3
31.3 23.9 29.4 0.0 5.5 15.2 17.3 16.1 33.9 23.4

Light Reddish Light White Buff Salmon Buff Reddish Buff Light brick orange brick orange pinkish
red red gray
Light Reddish Reddish Cream Buff Salmon Buff Reddish Buff White brick orange orange orange
red
Light Brick Light Cream Buff Salmon Buff Reddish Buff White brick red brick orange
red red
Light Brick Brick Cream Buff Salmon Buff Reddish Buff White brick red red orange
red
Brick Brick Brick Grayish Drab Brick Buff Reddish Buff Cream red red red yellow red orange

Brick Brick Dark Grayish Light Brick Buff Buff Buff Cream red red red yellow brown red





Table 3. continued



County WALTCN

a9 S-1Q 7 -0:19 0-127 0-124 3-16
Physical Properties
Plasticity Good Fair Poor Fair Good Good Excel.
Water of plasticity % 28 37 38 29 39 43 46
Linear air shrinkage % 5.9 10.2 10.6 7.0 9.0 11.6 7.6
hodulus of Rupture 90 320 230 290 320 290 70
Slaking test Fast Medium Fast Medium Fast Slow Fast
Color Light Olive Brown Brown Gray Dark Light
pinkish red pinkish
brown gray
Firing behavior
Linear shrinkage %
Cone 010 (950*) 0,0 1.0 0.5 .0.5 2.0 1.0 2.0
Cone 05 (1050*C) 0.0 0.5 1.0 0.0 2.5 1.0 1.0
Cone 03 (10900C) 0.5 3.5 1.5 0.5 5.0 4.5 3.0
Cone 1 (1150*C) 1.0 3.5 1.1.5 .7.5 5.0 4.5
Cone 3 (1190*0C) '1.0 4.0 2.5 1.5 .10.5 6.0 .7.0
Cone 6 (12500C' 1.5 1.5 10.5 10.5 7.5
Absorption% by weight
Cone 010 19.0 18.3 19.7 .17.0 -23.0 .19.6 28.2
Cone 05 '19.1 18.5 19.7 -17.2 .22.9 .17.6 28.6
Cone 03 18.1 13.2 -17.6 16.4 .16.0 .13.5 26.6
Gone 1 17.0 12.3 - 16.0 12.0 10.8 24.2
Cone 3 16.7 9.5 15.8 14.2 6.0 10.4 17.0
Cone 6 16.1 14.7 5.2 9.2 13.3
Porosity %
Cone 010 35.7 36.0 39.7 35.3 40.7 37.8 44.8
Cone 05 36.8 36.3 39.7 35.8 40.0 35.9 44.5
Cone 03 35.4 31.8 37.3 35.2 32.1 28.2 43.0
Cone 1 34.6 32.3 33.8 27.3 27.4 40.7
Cone 3 34.0 27.6 35.8 32.0 17.2 26.8 34.0
Cone 6 31.7 32.5 16.1 25.2 30.0
Color
Cone 010 Reddish Reddish Reddish Reddish Cream Reddish Very
orange orange orange orange orange, light
pink
Cone 05 Buff Reddish Reddish Reddish Cream Reddish Very
orange orange orange orange light
pink
Cone 03 Buff Brick Reddish Reddish Cream Reddish Light
red orange orange orange pinkish
gray
Cone 1 Buff Brick Light Cream Brick Light
red brick red pinkish
red gray
Cone 3 Buff Brick Brick Brick Cream Brick Light
red red red red pinkish
gray
Cone 6 Buff Brick Cream Brick Light
red red pinkish
..I.. gray





59



WASHINGTON

0-246 0-12 0-129 0-251 0-248 0-249 0-130 0-131 0-254 0-156

Good Excel. Excel. Good Poor Poor Good Fair Poor Fair
36 48 56 35 35 28 38 61 36 40
9.3 7.9 9.8 6.6 11.1 8.6 9.8 18.2 9.8 10.7
280 140 170 130 320 240 220 650 200 440
Medium Fast Fast Medium Fast Fast Medium Fast Fast Fast Orange Light Light Light Yellow- Light Brown Grayish Orange Red
pinkish grayish grayish ish brown yellow
gray pink pink gray


0.0 2.5 2.5 0.0 0.0 0.0 0.5 3.0 0.0 0.5
1.5 3.5 1.0 0.5 0.0 1.0 3.5 1.0
3.5 5.0 5.0 2.0 1.5 1.5 3.5 5.5 1.0 2.0
4.0 6.0 6.5 1.5 2.0 4.0 1.5 3.5
4.5 11.0 8.5 5.5 2.5 2.0 4.5 6.0 1.5 4.5
5.0 11.5 12.0 2.5 2.0 4.5 1.5 3.5

17.1 26.9 25.0 22.2 13.5 15.7 19.0 8.5 17.1 17.0 19.8 26.6 26.6 12.8 17.2 21.0 10.9 16.2
15.0 19.3 17.2 20.8 12.4 13.4 13.8 5.1 15.9 13.6 12.4 16.5 13.8 12.6 12.8 15.6 15.6 11.9
9.1 7.9 10.0 11.5 10.9 12.1 13.8 3.5 15.1 10.5
11.1 4.9 3.8 9.7 12.2 12.6 13.7 9.7

39.6 43.5 .42.1 40.0 31.1 34.8 38.4 22.3 35.9 35.0
38.5 41.6 43.0 29.6 33.5 41.0 22.9 34.4
35.8 36.2 34.5 39.3 29.0 30.7 33.9 17.7 35.5 32.1 31.2 33.4 29.6 26.0 31.0 34.0 32.8 29.1
28.3 19.8 23.3 30.0 27.2 29.5 32.9 12.9 31.3 28.1 30.3 15.5 13.0 26.8 30.6 31.9 32.7 27.2
Reddish Light Light Light Reddish Reddish Reddish Reddish Reddish Brick
orange pinkish pink pink orange orange orange orange orange red
gray
Reddish Iight Light Reddish Reddish Reddish Reddish Reddish
orange pinkish pink orange orange orange orange orange
gray
Light Light Light Light Light Light Light Light Brick Brick brick pinkishipink pink brick brick brick brick red red
red gray red red red red
Brick Light Light Brick Brick Light Brick Brick
red pinkish pink red red brick red red
gray red
Brick Light Light Buff Brick Brick Brick Brick Brick Dark red pinkish pink red red red red red red
gray
Brick Light Light Brick Dark Brick Brick Dark
red pinkish pinkish red red red red red
gray gray




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PAGE 1

F L O R ID A 8 T A T E B OARD O F O N 8 E R VATION George Vathis,; upBrvisor FLORIDA GEOLOGICAL SURVEY Herman Gunter, Director INFORMATION CIRCULAR -No. 2 F LO RIDA KAO I NS AND CLAYS Prepared by .James L. Calveb, Associate Geologist P-I 9 vq-/39 Florida Geological urvey TALLAHASSEE, FLORIDA S1949

PAGE 2

....... .... ..... .. ......... 7 7 -.. .. .." .. ---." ..".. .. ... .' .. .. -. ....... S-r-a.h ----ken, b G ad Sts . 194o .. .*, x" z Photographs taken by Gunter and 8tubbs in December 1910. ....* '. . ',,-.,.,.. ... .._..__,,. Viwo da lsic olln Oopcyspa dgr unmOt, showing ~~~ ~ ~ --LC drde alnbarn ad n vrbre.Danfo phoogrph tae byne nd8ub nDeebr1.·

PAGE 3

FOREWORD During the years that have elapsed since the Florida Geological Survey published in its 15th Annual Report, 1922-1923, "A Preliminary Report on the Clays of Florida", by Olen G. Bell, additional data have been gathered by the Survey. These data are presented here and make available to researchers and to industry knowledge of Florida's clays which supplement and amend the earlier report. Part I contains factual data on the sedimentary kaolins of the State which were abstracted from an unpublished manuscript: "Florida Kaolins", by Mr. Frank Westendick. Mr. Westendick determined these data while employed by the Florida Geological Survey, however, the manuscript, dated 1941, was prepared under an agreement with the Survey in cooperation with the United States Bureau of Mines. A revised copy of Mr. Westendick's manuscript which incorporates the editorial suggestions made by R. W. Smith, Hewit Wilson, and T. A. Klinefelter of the Bureau of Mines, is on file and may be consulted in the offices of the Florida Geological Survey. Part II of this report contains heretofore unpublished data on the common clays of Florida and is an abstract of a manuscript written by Dr. James H. C. Martens entitled: "The Clays of Northern Florida." A copy of the original manuscript, dated 1929, is on file and may be consulted in the offices of the Survey. ( ^ „

PAGE 4

CONTENTS Part I Page Florida Kaolins ............... ...........1 Introduction. ................. ........ ....1 General Properties. ......................... .. 1 Extent of Deposits. .... ........... ... .. ..2 Laboratory Procedure and Explanation of Test Data .. .......... 3 Description of Deposits by Counties Clay County... ................. ..........3 Jackson County ....................... ..... Lake County ......... ....................4 Marion County ...........................6 Pasco County .., ........................7 Polk County. ............................ 7 Putnam County. ................... ......... 7 Santa Rosa County. ...... ......... .....* 9 Walton County. .......... ........... ........10 Washington County. ................... ........ 10 Part II The Clays of Northern Florida. ....................... 20 General Statement .........................20 Description of Deposits by Counties Alachua County Campville ............................20 Hawthorn. .............................21 Bay County Panama City .................* * * * * * * * * ..21 Calhoun County Blountstown ...........* * * * * * * * * * * ...21 Darling Slide ...............* * * * * * * 22 Clay County Green Cove Springs. ......................22 Russell .& ....................* * * * * * * .23 Middleburg. ........................ ...23 Duval County Dixton. .............* * * .23 Escambia County Molino. .... ........* .........24 Century ..................* * * * * * * * ....25 Pine Barren ....................25 McKinnonville .. ...............26 Muscogee. ...............26 Yniestra. ....... .... .........* * .... 27 McMillan. .............................. ... 27 Flagler County Bikes Prairie. ... s .. ..* * * * * * * * * * ..... 28 Black Point ..... ........... ......28 Haw Creek .......* * * * * * * .. * ....28 St. Johns Park. .. ......* * * * * * * 29 Gadsden County Havana* * ............* * * * * ...29 Quincy, ., .• .........................30 Midway. , .......* * * .........31 River Junction. ...................31 River Junction. .......... .............. ..3

PAGE 5

Page Oulf County Port St. Joe ..* * * ..* ..............31 Wewahitchka... ...........*. ........ 32 Holmes County Argyle ....................32 Ponce de Leon. .* * * * * * * * * * * * * * * * * * * * * * * * ...33 Jackson County Cottondale ......................... ..33 Marianna ...........................34 Round Lake ..... ....... .... ........... .35 Jefferson County Wacissa. ...* ...... * * ..* * * * * * ......35 Leon County Woodville. ........................6 ....36 Liberty County Alum Bluff .... ....... .......... .. ..36 Bristol Landing. ............... ........ ..... 37 Estiffanulga ............................37 Nassau County Callahan .............................37 Boulogne ................ ......38 Orange Bluff ............. .. .... ...39 Brick Yard Landing St. Mary's River. ................39 Okaloosa County Milligan ...............................39 Putnam County Springside ............. .................40 Woodburn ................, ...........40 Orange Mills ..................... 40 Hopkins Point. ............. .... ....... ..41 St. Johns County Hastings ............ ..................41 Santa Rosa County East Branch Coldwater River. .....................41 Allenton School .........................42 Crow Bridge, West Branch Coldwater River ............... 42 Milton ................................42 Walton County Paxton ......... .... ...............43 Red Bay. ............. .. .......... .43 Argyle ...............................44 Washington County Caryville. ................ ......... 44 Chipley ............................ .44 Vernon ................................45 Wausau ...............................45 ILLUSTRATIONS Figures View of Edgar Plastic Kaolin Company's pit, Edgar, Putnam County ............... .Frontispiece Distribution of Kaolin in Florida and Area Included in the Common Clay Investigation ..., ... ....Facing page 1 Tables ,1 Chemical Analyses of Florida Plastic Kaolins and Clays .......12 2. Physical and Ceramic Data of Florida Plastic Kaolins and Clays ....15 3. Physical and Firing Properties of Florida Clays. ..........48

PAGE 6

Distribution of kaolin in Florida and area included i. the com.on clay investigation S------, J .Atlantic -C\ Gulf 1* of f Mexico i ---··--i i--.--. -A Approximate location of kaolin-bearing sand areas SOutline of area inclosing the counties in which the common S clay deposits described are situated c," ,t -..ibed ar -"2. " "' -

PAGE 7

1 Part I FLORIDA KAOLINS INTRODUCTION Florida kaolins, because of certain superior properties, are used almost exclusively for fine ceramic.whitewares and are incorporated in nearly all standard whiteware bodies. The known extent of the proven kaolin deposits of Florida is limited and a great deal of exploratory drilling and testing will be necessary before reserves can be fully established. The data presented here were gathered during an investigation to determine the quality of undeveloped kaolin outcroppings, old workings, and deposits reported from well drillers records. GENERAL PROPERTIES The kaolins of Florida occur naturally mixed with large quantities of sand and small quantities usually less than 2 percent, of mica, iron and other opaque minerals. The kaolin content of the sands varies from 5 to 45 percent and averages about 18 percent. The sand and mica are readily eliminated by the usual commercial washing methods, but the color of the raw kaolin does not yield to the generally used bleaching processes. The light cream tint of the waohed kaolin while not acceptable to the paper trade is not objectionable in ceramics. When fired, the kaolin has a near white tint about the same as the best Georgia kaolins. Florida kaolin has the unique property of high plasticity which is so pronounced that for years the trade has used the term "Florida Plastic Kaolin." It has about the same degree of plasticity as the usual English or Western Kentucky and Tennessee ball clays. In some ceramic bodies, notably certain types of dry-pressed porcelains, complete substitution of Florida kaolin for the kaolin-ball clay body is possible. In other bodies, where the ware is moulded in the plastic state or cast, Florida kaolins cannot

PAGE 8

2 be substituted for ball clay completely because of their high drying and firing shrinkages. The ball clay content of such bodies may be decreased decidedly by the addition of some Florida kaolin and this partial substitution results in a body that has good plasticity and shrinkage properties as well as a desirable gain in color. There is a general trend in the ceramic industry to employ dry press procedures rather than plastic or cast, and the increased use of Florida kaolins seems to be assured. EXTENT OF DEPOSITS The known deposits of kaolin having commercial value occur in a large area in east central Florida and in a smaller area west of the Apalachicola River in western Florida. The central Florida deposits lie within the Lake Region and extend in a belt up to 25 miles wide from southern Clay County to southern Polk County, a distance of 150 miles. The eastern boundary of this belt is approximately 10 miles west of the St. Johns River. Although the kaolin is not continuous throughout the area described above, the irregular outlines of indiviual deposits are suggestive of remnants of a former continuous bed of kaolinitic sand. In the western part of the State, kaolin deposits occur in a narrow belt that extends from Round Lake, Jackson County, westward to the Escambia River, Santa Rosa County, a distance of 125 miles. Here the deposits are more scattered and more irregular in their occurrence than those of central Florida and there has been no commercial development. Kaolin deposits have been reported in other sections of the State, notably in Citrus, Hernando, Levy, Pasco, and Sumter counties, however, these deposits are for the most part white phosphatic clay and have been mistakenly identified as kaolin.

PAGE 9

3 LABORATORY PROCEDURE AND EXPLANATION OF TEST DATA Standard laboratory procedures were used in making the screen analyses and the forming and drying tests. The slaking time tests as well as the transverse strength determinations in both the green and fired tests, were made on mixtures of 50 percent kaolin and 50 percent potter's flint. Standard ceramic test procedure was followed in the determination of the firing characteristics except for the method of firing. Individual firings were made to cones 010, 05, 1, and 4 in a Caulkings Revelation No. 5 gas fired pottery kiln, and to cones 7, 10, and 15 in a gas fired Denver Fire Clay Company muffle type assey furnace. The Caulkins kiln was heated at the rate of 65 degrees F. an hour for seven hours, then at the rate of 80 degrees and then 90 degrees. The heating rate was slowed down at the finish and the final cone was allowed to soak down. A uniform rate of 90 degrees an hour was used in heating the Denver furnace. Description of Deposits by Counties CLAY COUNTY Although the southwestern portion of Clay County lies within the proven area of kaolin-bearing sand, new information for only one locality is available. The chemical and'physical test data on four samples collected from the old kaolin mine at "Chalk Hole", about five miles east of Keystone Heights, indicate the kaolin to be high grade and comparable with the best produced in Florida. This mine is situated on the Foremost Properties, a portion of the J. C, Penny-Owinn Corporation's holdings, in Sec. 6, T. 8 S., R. 23 E. Descriptions of the samples from this property follow: 0-353 Grayish crude kaolin-bearing sand from boring in floor of pit. 0-3541 Grayish crude kaolin-bearing sand from boring 30 feet south of pit. 0-355 Washed kaolin obtained from ball-like masses on edge of lake.

PAGE 10

4 0-467' rayish crude kaolin-bearing sand from boring in floor of pit. The chemical analysis, see Table I, was made on a composite of sample 0-467; physical test data, see Table II, are presented on all these samples. JACKSON COUNTY White kaolin-bearing sand is exposed in the road materials pit located 1.7 miles south of Round Lake on J. A. Seale's property, Sec. 24, T. 3 N., R. 12 W. Sample 0-400 is a composite sample from auger holes drilled to the depth of 16 feet and located within 12 feet of the exposure of white kaolin in the pit. The chemical analysis, see Table I, and data on physical properties, Table II, indicate this kaolin to be very similar to the better clays of Putnam County. LAKE COUNTY In the past Lake County has been one of the principal producers of sedimentary kaolin in Florida, however, since 1932 or 1933, all of the Florida kaolin production has come from mines located in Putnam County. Numerous deposits of kaolin-bearing sand occur throughout the entire western half of the County but data are available for only three localities: 1. Lake County Clay Company (inactive). This pit is located 2.2 miles east of Okahumpka and about two miles south of Lake Harris, in Sec. 13, T, 20 S., R. 24 E. Exposed in the pit are from 12 to 30 feet of cross-bedded kaolin-bearing quartz sands that contain flat, quartzite pebbles up to three inches in length, and a small amount of mica. The kaolin content varies considerably but averages about 25 percent. Data are presented on the following samples.: 0-310 Commercially washed kaolin. 0-311 Gray white kaolin-bearing sand from top of stripped bank. 0-312 Gray kaolin-bearing sand from dredge hopper. 0-319 Red overburden sand.

PAGE 11

0-320 Whitecirude kaolin-bearing sand from water's edge. 0-460 Kaolin-bearing sand from auger boring located near the company' "Boring # 20." 0-468 Commercially washed kaolin from drying shed rewashed in laboratory. The chemical analyses of samples 0-319, 0-460, and 0-468, see Table I, and the physical test data for all the samples, Table II, indicate the kaolin to be of the same high quality as that produced in Putnam County. Although the kaolin has a slightly inferior color, this characteristic is likely to be unnoticed in bodies containing other clays. 2. The Florida China Clay Company (abandoned) property is situated two miles east of Okahumpka, about 0.1 mile east of Falatlakaha Creek and south of Florida Highway 46, in Sec. 13, T. 20 S., R. 24 E. The kaolin-bearing sand is somewhat finer grained and contains fewer pebbles than that found on the Lake County Clay Company's property to the East. The overburden averages less than six feet and the white kaolin-bearing sand varies from 12 to 30 feet in thickness. Test data are presented on the following samples: 0-323 Crude material from the settling troughs. 0-324 Commercially washed kaolin, 0-342 White kaolinitic sand from auger boring located between mine and plant. 0-461 White kaolinitic sand from auger boring located between mine and plant. 0-462 White kaolinitic sand from auger boring located 100 yards northwest of sample 0-461. For chemical analyses of the composites of samples 0-461 and 0-462, see Table I: for physical test data on all the samples except 0-461, see Table II. In color, this kaolin is inferior to that found on the adjoining Lake County Clay Company's property, nevertheless, it remains sufficiently good for most ceramic purposes. The bonding strength is somewhat superior to, and vitrification begins at a lower temperature than the kaolin from the adjoining

PAGE 12

6 property. Although the kaolin was used successfully in the ceramic industry for many years, all of the production from this mine during the last years of its operation was purchased by the U. S. Rubber Corporation for rubber filler. 3. On the John Irwin property, situated on Florida Highway 450, 5.1 miles west of Umatilla, in Sec. 5, T. 18 S., R. 26 E., a road materials pit exposes kaolin-bearing sand. A chemical analysis of a washed sample from auger borings made to the depth of 20 feet is included in Table I, sample 0-352, and physical test data on this sample are given in Table II. These data indicate the quality of the kaolin to be equal to that found in Putnam County. MARION COUNTY Most of the reported occurrences of kaolin deposits in Marion County are contained in the logs of borings made by the U. S. Army Engineers along several proposed canal routes. These reported deposits are confined to the Lake Region and "The Scrub", the sand hills east of the Lake Region. Incomplete data are available on four localities. 1. On the property of M. B. Owens, located on the western edge of "The Scrub", about 17 miles east of Ocala and just west of Long Lake in the NW( of Sec. 14, T. 15 S., R. 24 E., tan to red kaolin-bearing sand is exposed in a road material pit. The chemical analysis of a composite of sample 0-510 taken from borings made in the floor of this pit is given in Table I. The kaolin is off-color and has low strength. 2 and 3. Samples of kaolin, obtained from auger borings in two road material pits located in the Ocala National Forest, were off-color and not high grade. These pits are situated: (1) west of Lake Kerr in the NW4 of Sec. 20, T. 13 S., R. 25 E., and (2) about 9 miles south of Florida Highway 40 in the SWA of Sec. 32, T. 16 S., R. 26 E. 4. The reported occurrence of white kaolin-bearing sand in the excavations for the dam and power house three miles northeast of Oklawaha at Moss

PAGE 13

7 Bluff, SW4 of Sec. 23, T. 16 S,, R. 24 E., has been confirmed. A sample from the spoil bank yielded 25 percent kaolin when washed. PASCO COUNTY Deposits of kaolin-bearing sands in Pasco County have not been verified. A test boring near the deposit reported by Bell southeast of Dade City encountered phosphatic clays. The chemical analysis of sample 0-438 which was taken from an auger boring on the E. D. Hughes property about four miles south of Dade City in the NW4 of Sec. 17, T. 25 S., R. 22 E., is given in Table I. This dounty lies outside the area mapped as containing kaolin-bearing sands. POLK COUNTY Kaolin-bearing sands have been encountered in a number of wells in Polk County. These sands extend throughout the Lake Region of the county but they occur at depths varying from 50 to 200 feet below the surface. Because of the thick overburden, such deposits have no commercial value and no test data are available. PUTNAM COUNTY The Putnam County kaolins have been produced commercially for many years and they serve as standards of comparison for kaolins from other sources. All of the production comes from localities near Edgar and Crossley, however, numerous occurrences of kaolin are known in the western portion of the county. The greatest thickness of kaolin-bearing sand, 75 feet, occurs in the Edgar District. Here the average vertical section consists of 10 feet of soil and yellow sand overburden, 10 feet of tan to red kaolin-bearing sand, and 20 to.45 feet of gray-white kaolin-bearing sand. 1. Bell, Olin G., "A preliminary report on the Clays of Florida." Fla. Geol. Survey 15th Annual Report, 1922-1923.

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8 The Edgar Plastic Kaolin Company property covers a large acreage on both sides of the Atlantic Coast Line Railroad at Edgar, in Sec. 25, T. 10 S., R. 23 E. Coarse, micaceous, kaolin-bearing sands that contain quartz pebbles up to three inches in length are exposed in the pit north of the railroad. Data are presented on the following samples: 0-325 Overburden of the Edgar Plastic Kaolin Company pit. 0-326 White crude kaolin-bearing sand. 0-327 Commercially washed and dried kaolin. 0-464 Kaolin-bearing sand from auger boring located in abandoned portion of pit. 0-469 Commercially washed and dried kaolin. The high quality of this kaolin is indicated by the chemical analyses of samples 0-325, 0-464, and 0-469, Table I, and by the physical test data for all the above samples presented in Table II. The United Clay Mines Corporation property consists of several hundred acres lying north of the Atlantic Coast Line Railroad at Crossley Station, in Sec. 27, T. 10 S., R. 23 E. The kaolin is recovered from a 10-foot bed of relatively fine sand that contains little mica and very few pebbles. Three grades are produced: (1) Putnam standard high quality clay, (2) Lakeland clay which has a slight cream tint, and (3) Jasper, a slight salmon-colored clay. The high quality of these clays is indicated by test data on the following samples: 0-317 Red-stained kaolin-bearing overburden representing 18 feet. 0-318 Commercially washed and dried Lakeland brand. 0-357 Crude white kaolinitic sand from three 18-foot borings spaced in a triangle with 1000-foot sides. 0-465 Crude white kaolinitic sand from auger boring located 150 feet north of office. 0-470 Commercially washed and dried Putnam brand. The chemical analyses of samples 0-317, 0-465, and 0-470, are given in Table I,

PAGE 15

9 and the physical data on all the above samples in Table II. The Foster Kaolin Company formerly produced kaolin from a pit located about one mile south of Edgar, in Sec. 36, T. 10 S., R. 23 E. Although this company is inactive and the pit abandoned, some data are presented to record the high quality of kaolin found at this locality in the following samples: 0-435 White kaolin-bearing sand from a 10-foot section on the south side of pit. A 0-436 Commercially washed and dried kaolin. 0-463 White kaolinitic sand from auger boring on south side of pit. The chemical analysis for sample 0-463 is included in Table I, and the physical test data for all the samples are given in Table II. The Eccles property located on the east side of Redwater Lake, about two miles south of McMeekin station and two and one-half miles southwest of Crossley, comprises 270 acres in the SE1 of Sec. 5, the SW1 of Sec. 4, and the NW¼ of Sec. 9, T. 11 S., R. 23 E. The physical data determined on a sample obtained from an auger boring on this undeveloped property are included in Table II, sample 0-466. This boring encountered 14 feet of overburden and 10 feet of white kaolin-bearing sand which was sampled. The tests indicate the kaolin to be near standard grade, however, it does have a slightly inferior color and a little greater drying shrinkage than the commercial grades of Putnam County kaolins. SANTA ROSA COUNTY White kaolin-bearing sand is exposed in the floor of a gully near the east bank of Weaver Creek on the "Y. P. S." tract, seven miles southeast of Milton, in Sec. 2, T. 1 S., R. 27 W. The chemical analysis, see Table I, sample 0-450, and the physical data, Table II, indicate this kaolin to be similar to the Lake County material.

PAGE 16

10 WALTON COUNTY Kaolin-bearing sands occur on the H. C.. Weller property which lies on both sides of Florida Highway 285, about four miles south of U. S. Highway 90, in the north half of Sec. 6, T. 2 N., R. 21 W. An auger boring located 200 yards southwest of the water tank on the west boundary line between the Weller property and the Choctawhatchee National Forest, encountered white kaolin-bearing sand from 12 feet below the surface to 30 feet. Although the physical data determined on this sample, see Table II, sample 0-330, are similar to those of the Lake County kaolins, the kaolin yield of the sand is too low to be considered for commercial development. Two miles east of De Funiak Springs on U. S. Highway 90 white kaolinitic sands were encountered in a well on the David R. Thompson property, Sec. 30, T. 3 N., R. 18 W. Sample 0-413 consists of the kaolin-bearing sand recovered from the bottom ; six feet of a 25-foot well and from an auger boring located 20 feet east of the well. Both the well and the auger boring bottomed in kaolinitic sand. The chemical analysis of this kaolin is listed in Table I under sample 0-413 and the physical data are given in Table II. The kaolin has excellent color, high plasticity, low shrinkage and moderate strength. It compares favorably with the Putnam County kaolins. WASHINGTON COUNTY Both Cooke-/and Vornon2 report kaolin-bearing sands at Chalk Bluff, 4.5 miles north of Vernon in Sec. 7, T. 3 N., R. 14 W. Here two beds of creamwhite clay, one, three feet in thickness, the other, four feet in thickness 1. Cooke, C. Wythe, "Geology of Florida". Fla. Geol. Survey Bulletin No. 29, 1945. 2. Vernon, Robert 0., "Geology of Holmes and Washington counties, Florida". Fla. Geol. Survey Bulletin 21, 1942.

PAGE 17

11 are exposed, These clays are of the stoneware type. Data are presented on the following samples: 0-399 Cream-white clay from lower (4-foot) bed exposed at base of outcrop. 0-418 Auger sample representing top 2½ feet of lower (4-foot) bed. 0-522 Auger sample representing upper (3-fo6t) clay bed. Chemical analysis of samples 0-399 and 0-522 are given in Table I, and physical data determined for samples 0-399 and 0-I18 are included in Table II. 1 .. 4• °'

PAGE 18

12 Table 1. Chemical Analyses of Florida Plastic Kaolins and Clays (Downs Schaaf analyst) County CLAY JACKSON LAKE ForeSeale Florida China Irvin Locality most PropLake County Clay Clay CorporaProp_Prop,' erty Companv tion _ erty Crude Crude OverCrude Lake Crude Crude Crude Material White White burden White Brand White White White Sample 0-467 0-400 0-319 0-460 0-468 0-461 0-462 0-352 __ne^----------------Si02 46.10 47.82 42.50 46.31 46.22 46.81 45.19 46.83 A1203 37.81 36.08 36.56 37.63 37.11 31.65 37.61 37.43 Fe203 0.49 0.65 2.90 0.41 0.35 0.11 0.29 0.10 FeO 0.21 0.22 0.11 0.23 0.22 0.07 0,28 0.21 MgO 0.08 0.09 0.27 0.08 0.10 0.68. 0.11 0.12 CaO 0.35 0.35 0.77 0.34 0,59 1.28 0.50 0.38 Na20 trace 0.01 trace trace trace trace trace trace K20 0.16 0.29 0.07 0.11 0.14 0.29 0.08 0.15 H20 -0.98 1.01 1.83 1.08 1.50 5.81 1.53 1.10 H20 + 13.25 12.55 13.50 13.11 12.92 11.01 13.20 13.01 C02 0.37 0.38 0.40 0.34 0.41 0.56 0.36 0.38 Ti02 0.23 0.64 0.77 0.47 0.36 0.74 0.70 0.22 ZrO2 trace trace trace trace trace trace trace trace P205 0.08 0.11 0.35 0.14 0.28 1.10 0.32 0,11 SO3 0.01 0.05 0.18 0.02 0.01 0.03 0.05 0.07 S (FeS2) trace trace trace trace trace trace trace trace Cr203 none none none none none none none none V203 none none none none none none none none HnO 0.01 0.01 0.01 0.01 0.01 0.02 0.01 0.01 BaU none none none none none none none none C(organic) 0.07 0.02 0.07 0.01 0.08 0.03 0.01 0.08 TOTAL 100.20 100.28 100.29 100.29 100.30 100.19 100.24 100.20 Trace indicates quantities less than 0.005 percent.

PAGE 19

13 MARION PASCO PU T N AM. Owene Hughes Foster PropPropEdgar Plastic-Kaolin United Clay.Mines Kaolin erty erty ompany Corp6ration Mine Crude hosphati OverCrude E.P.K. OverCrude : Putnam Crude White Clay burden White Brand burden White Brand White 0-510 0-438 0-325 0-464 0-469 0-317 0-465 0-470 0-463 46.44 21,42 44.99 47.70 45.8.1 43.34-.. 47,21 .46.04 46.80 37.04 29.10 37.21 36.88 36.50 37.40. 37.55 .37.98 37.19 0.14 4.44 0.34 0.21 0.40 0.95, 0.11 0.09 0.50 0.14 0.04 0.22, 0.24 0.22 .0.05.. 0.22 0.20 0.21 0.08 0.06 0.09 0.11 0.08 0.05 0.08 0.08 0.09. 0.57 5.25 0.60 0,36 0.81 0.60 .0.32 0.36 0.36 0.01 0.79 trace trace trace trace trace .trace trace 0.05 0.40 0.07 0.15 0.22 0.07 .0.08 0.20 0.10 2.00 1.68 2.30 0..93 2.20 2.54 0.98 , 1.41 1.11 12.66 14.80 12.90 12.80 12.75 13.77 13.10 13.17 13.03 0,53 0.68 0.50 0.38 0.39 0.38 0.33 0.38 0.37 0.32 1.05 0.55 0.41 0.43 0.65 .0.18 0.15 0.35 trace trace trace trace 0.015 trace trace trace trace 0.07 20.10 0.18. 0.11 0.38 0.18 0.09 0.08 0.15 0.03 0.04 0.05 0,01 0.02 0.05 0.01 0.04 0.02 0.01 trace trace trace trace trace trace trace trace none none none none none none none none none none none none none none none none none none 0.02 0,01 0.02 0,01 0.01 0.01 0.01 0.01 0.01 none. none none none none none none none none 0.01 0.01 0.02 0,,2 0.08 0.01 .0 0 0.05 0.01 100.12 99.87 100,04 100,32 100.315 100.05 100.31 100.24 100.30

PAGE 20

14 Table 1. continued County SANTA WALTON WASHINGTON ROSA Locality Y.P.S. Thompson Chalk Hill Tract Property i Cfde Crude Lover Upper y Material White White Clay Clay ample Number 0-450 0-413 0-399 0-522 Si02 45.95 47.50 44.84 .44.01 A123 37.55 37.49 37.56 38.10 e 3 0.28 O.?0 0.88 .0.57 F 0.14. 0.?2 0.25 .0.25 Mg0 0.04. 0.Q8 0.10 .0.14 CaO 0.48 0.35 0.36 0.48 NaO 0.01 0.01 0.01 0.04 K2 0.07 0.10 0.28 .0.22 H 0 -1.81 0.93 1.23 .1. HoO 13.01 12.97 13.07 .13.40 CO 0.34 0.35 0.37 .0.43 Ti~O 0.25 0.25 1.07 .1.20 ZrO2 trace trace trace trace P205 0.11 0.12 0.15 0.15 S30 0.14 0.01 0.04 0.03 3 (FeS2) trace trace trace trace Cr2C none none none none V2 none none none none Mn0.01 0.01 Q.01 0.02 BaO none none none none C(organic) 0,01 0.0.1 0.01 0.01 TOTAL 100.20 100.30 100,23 100.16 Trace indicates quantities less than 0.005 percent.

PAGE 21

15 Table 2. Physical and Ceramic Data of Florida Plastic Kaolins and Clays (Frank Westendick analyst) County CLAY JACKSON Seale Locality Foremost Property Property Crude Crude Washed Crude Crude Washed Material White White Kaolin White White Kaolin Sample Number 0-353 0-354 0-355 0-467 0-400 0-310 Screen analysis +35 mesh 27.0 53.0 0 24.6 14.8 0 -35 * 100 55.4 32.6 0 60.6 58.3 0 -100 + 200 4.4 2.0 3.9 2.2 7.8 0.41 % Mica 0.1 0.5 0.1 0.3 0.5 0 % Kaolin 13.1 11.9 96.0 12.1 18.6 99.6 Forming and drying Water of plasticity 41.8 37.8 45.4 43.8 43.3 46,4 Shrinkage Volume 21.4 18.3 22.4 21.0 17.3 21.0 Linear (CPlc.) 7.7 6.5 8.1 7.6 6.1 7.5 Linear (Meas.) 7.0 5.7 c 06 6.9 5.7 6.7 Washed color white white wne white white white Slaking time (Min.) 3.0 4.0 6.0 4.5 16 8.5 Transverse strength 245 290 310 296 290 305 Firing behavior ignition loss Cone 010 (950°C) 13.9 14.2 15.1 14.7 13.0 13.6 Cone 05 (1050°C) 13.9 14.3 15.0 14.5 13.3 13.7 Total shrinkage Volume Cone 010 (950*C) 30.9 29.2 31.7 30.4 25.1 29.6 Cone 05 (1050°C) 31.3 29.2 32.5 32.3 26.3 37.9 Cone 1 (1150*C) 31.3 30.4 39.3 38.1 26.8 38.7 Cone 7 (1270°C) 44.4 39.9 47.1 47.4 42,0 54.7 Cone 10 (1330*C) 50.6 47.7 53.2 53.9 43.9 56.8 Cone 15 (1433*C) 57.2 54.7 57.5 55.0 55.6 60.5 Linear (Calc.) Cone 010 11.6 10.9 11.9 11.4 9.2 11.0 Cuno 05 11.4 10.9 12.3 12.2 9.6 14.6 C nd 1 11.8 11.2 15.3 14.7 9.8 15.0 Cone 7 17. 15,6 19.1 19.3 16.6 23.2 Cone 10 21.0 19.5 22.4 22.9 18.0 24.3 Cone 15 24.6 23.2 24.8 23.3 23,6 26.4 Absorotion Cone 010 28.5 30.2 32.3 31.8 34.7 32.1 Cone 05 28.1 28.7 31.0 30.6 34.1 26.6 Cone 1 27.3 28.0 19.1 23.1 33.8 26.3 Cone 7 18.5 23.3 15.9 16.2 20.0 10.2 Cone 10 12.4 17.2 9.2 10.2 16,4 8.1 Cone 15 5.0 5.2 6.7 7.7 5.4 1.0 Apoarent porosity Cone 010 47.3 47.0 47.6 47.1 48.9 46,2 Cone 05 46.6 46.9 47.2 46.6 48.7 43.0 Cone 1 43.1 43.6 38.1 39.9 48.9 43.0 Cone 7 34.8 39.5 31.2 31.4 36.2 22.7 Cone 10 26.2 34.7 21.0 21.9 31.3 .19.0 Cone 15 13.4 12.7 15.6 17.6 12.9 4,., Color light Cone 010 white white cream white wite ah Cone 05 white white white white white white Cone 1 white white white white white whi Cone 7 white white white white white w Cone 10 white white white white Cone 15 white white cram w white Transverse strength Cone 010 210 370 240 250 260 1 Cone 05 ---2 Cone 1 425 490 400 440 400 4 Cone 7 1980 2480 2100 2140 2160 Cone 10 2710 3020 2690 2860 2830 Cone 15 2980 3210 3140 3290 2950 . Stel hard at cone 3 3 2 2 ZRIMLtrio ConM Eo±v 33+ 33. 331 --3+ ^

PAGE 22

16 LAKE Lake County Clay Company Florida China Clay Corporation Crude -Gray OverCrude Crude Lake Crude Washed Crude Crude. White Crude burden .White White Brand White Kaolin White White 0-311 0-312 0319 0-320 0-460 -468 0-3 0-32 0-342 0-462 ' 18;7 27.5 -9.6 11.2 20.9 -7.8 -11.8 15.6 47.6 41.4 63.0 40.0 47.6 -30.6 -51.3 38.4 7.3 2.3 2.1 4.4 6.5 -20.8 1.1 12.3 17.6 0.99 0.30 0.01 0.20 2.0 -0.1 -0.7 2.5 26.3 28.5 25.3 44.4 22.9 -40.7 98.9 23.7 25.8 38.8 37.9 38.0 37.5 45.6 43.4 45.1' 41.4 45.0 43.0 16.6 ' 18.5 17.0 18.7 19.4 23.2 18.5 20.6 18.9 22.9 5.9 6.6 6.2 6.7 6.9 8.4 6.6 7.2 -6.8 8.2 5.0 6.0 5.5 6.0 6.0 7.7 6.0 6.7 6.0 7.3 white white red white white white white fhe -white 7 8 '27 14 9.1 -12 14 -10.9 310 235 320 270 255 -310 380 310 355 14.6 14.3 13.1 13.6 14.5 -14.2 15.1 15.1 15.5 14.4 14.5 13.5 13.9 14.3 -14.3 15.4 15.0 15.9 26.8 24.7 30.0 24.3 27.4 28..-8 29.0 30.9 30.9 31.4 27.2 26.3 30.6 28.8 29.2 34.2 33.7 32.5 36.2 33.4 44.0 26.8 '31.2 28.8 31.7 33.7 44.0 34.6 41.3 46.1 45.7 34.2 51.9 51.9 50.4 44.4 46.9 58.4 49.8 56.0 49.8 46.9 57.0 52.6 52.3 53.5 55.5 59.7 54.7 58.6 56.4 54.3 -57.2 57.8 62.1 56.5 59.7 60.5 60.8 9.8 9.0 11.2 -'88 10,1 10.7 10.8 11.6 11.6 11.8 1040 9.6 11.5 10.7 10.9 13.0 12.8 12.3 13.9 12.6 17.6 9.8 11.8 10.7 12,0 12,8 17.6 13.2 16.1 18.9 18.4 13.0 21.6 21.6 20.8 17,8 19.0 25.3 20.6 24.0 20.6 19.0 24.6 22,0 22.0 22.5 23.6 26.0 23.2 25.5 24.1 23.0 -24.6 24.9 27.3 24.2 26.0 26.4 26.7 32.0 30.6 31.6 28.0 35.6 33.1 35.4 30.2 33.6 32.7 30.8 27.8 30.1 26.7 34.1 33;5 33.6 30.0 31.6 31.8 29.2 27.9 -22,3 25.8 32,1 29,9 29.2 22.6 13.2 19.1 13.2 22.6 8.9 9.4 13.3 20,3 15.5 11.8 11.6 7.1 9.1 12.9 4.1 -3.9 11.2 11.5 7.0 4.5 9.5 5.8 0.8 0.8 --0.4 5.3 0.6 3.4 3.5 3.2 3.8 46.3 45.8 45.8 42.3 50.0 47.3 50.1 45.9 48.6 48.2 45.9 43.0 45.0 42.7 49.0 46.2 49.0 45.0 48.2 48.5 45.1 43.2 -39.1 41.6 48.1 45.9 45.1 38.9 28.4 33.7 30.1 38.7 18.0 22,2 27.3 37.0 32.1 27.7 24.0 16.0 11.7 27.1 5.6 6.8 24.0 30.0 16.9 11.0 21.0 14.4 3.2 3.4 -1.8 12.9 2.3 7.2 5.1 9.4 9.7 white white 1ght white white m white liht white OR white white white white' white white pink white white ,white white mt white white white white c1nk white white white white -e white white white: white puple white white Swhwhte ite I e white white white white purpe white pkui" I -p'rple cream pre w3te white rgwn w ge white white -wgle am e wh4te wh -slate -slate slate slate slate sla purple green purp 2180 -220 --290 270 340 -200 --0 -350 -460 --1710 1650 1605 S2290 2870 --3130 3150 3195 1*.' 3060 .3570 --320 3890 3985 ,. c-' .-3510 --3980 4160. 4525 --N ' 4 334:" ,,l :""..

PAGE 23

17 Table 2.continued County LAKE P U TN AM cont'd Irvin" Locality PropEdgar Plastic Kaolin Company erty Material Crude OverCrude Washed Crude E.P. K. SW;hd.te burden White Kaolin White Brand S~vple 032 0-5 -325 0-26 0-327 0-464 0-469 Screen analysis *35 mesh 22.2 32.1 13.6 -30.0 -35 +100 57.7 42.1 49.9 -.39.5 -100 +200 6.2 1.-5 ,6.9 1.1 9.1 1.3 % rica 0.4 0.2 .2.0 -* 1.1 A Kaolin 13.5 24.1 27.6 98.9 -20.3 98.7 Forming and drying 4ater of plasticity 45.4 36.2 38.4 40.5 -42.7 46.1 Shrinktge Volume 17.5 17..4 16.9 19.4 19.4 21.0 Linear (Calc.) 6.2 6..2 .6.0 .7.0 7.0 7.5 Linear (Meas.) 5.2 5.7 5.5 .6.2 6.3 7.0 Washed color white tan white white white white Slaking time (Min.) 5.5 12.0 7.0 9.5 6.8 11.0 Transverse strength 250 210 280 250 310 320 Firing behavior ignition loss Cone 010 (950"C) 13.7 15.1 14.1 14.2 -14.7 15.3 Cohe 05 (1050°C) 13.9 15.3 14.4 14.6 15.0 15.6 ?otal shrinkage Volume Cone 010 (950*C) 25.2 30.5 25.9 .25.5 -30.4 34.6 Cone 05 (1050°C) 28.0 31.1 28.0 30.0 -31.9 35.4 C6ne 1 (1150°C) 23,8 36.2 28.0 30.5 39.5 36.2 Cone 7 (1270*C) 42,6 40.5 39.1 45.3 -45.2 49.4 Cone 10 (13 30C) 50.5 54.3 44.4 49.4 -50.2 51.0 Cone 15 (1430°C) 55.2 58.4 54.3 55.1 56.1 58.0 Linear (Calc. C no 010 9.2 11.4 9.5 9.3 11.4 13.2 Cn J 05 10.4 11.7 10.4 11.2 12.0 13.5 C n., 1 10.6 13.9 10,4 11.4 15.3 13.9 Cone 7 17.0 15,9 15..2 18.2 18.2 20.4 Cone 10 21,0 23.0 17,8 21.4 20.8 21.2 Con,15 23.5 25.3 23.0 23.4 24.0 25.1 Abuorotion Cone 010 35.6 31.6 30.6 31.0 31.2 27.4 Cone 05 33.0 31.0 30.1 29.2 30.1 27.0 Cone 1 31.1 26.0 28.3 27.6 23.7 26.2 Cone 7 19.7. 18.6 18.5 1,5.4 17.5 13.7 Cone 10 13.0. 6.0 14,0 13.2 13.5 11.6 Cohe 15 7.6 3.2 6.4 4.2 5.5 3.2 Apparent porosity Cone 010 49.2 46.1 46.6 45.3 45.8 "42.7 Cone 05 47.4 46.0 46.8 45.3 45.1 ,42.6 Cone 1 46.8 42.6 44.5 42.3 38.9 42.5 Cone 7 37.6. 32.4 33.7 30.0 32.0 27.6 Conei 10 27.8 18.9 28.1 27.6 27.7 24.1 Cone 15 16.2 8.1 15.3 10.0 12.7 7.8 Color Cone 010 white "ht white white white white Cone 05 white white white white white Cone 1 white ,Lgt white white white white Cone 7 white white white white white. Cone 10 white e white white white white Cone 15 white white o 0 l h e Tranaverse strengthrp Cone 010 235 120 230 210 340 210 "' Cone 05 -145 310 285 -390 t Cone 1 500 620 650 570 580 790 Cone 7 -2170 2200 2090 2460 -2130 :! Cone 10 2040 2860 2670 2590 2900 -29404. B:: Cone 15 --3080 2940 3290 0 3260,Q' Stele hard at cone 4 4 4 4, . 1Pwr n Cne 33.. * -3 .ill43o

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PUTNM -continued Eccles United Clay Mines Corporation Foster Kaolin Company Property Over-Lakeland Crude Crude Putnam Crude Washed Crude Crude burden Brand' White White Brand White Kaolin White White 0-317 0-318 0357 0-465 0470 -435 0-43 6 0-463 0-406 18.5 0 16.8 12.5 0 20.9 0 24.3 12.2 558 .0 63.2 67.3. 0 53.6 0 54.7 67.4 1.6' 0.9 2.2 1.9 1.2 4.5 1.9 3.0 4.6 0.1' 0 0.2 0.6 0 0.8 0 1.1 0.6 24.0 99.1 17.6 17.8 98.8 20.2 98.1 16.8 15.2 40.5 49.0 42.9 41.3 46.8 38.2 42.6 36.8 40.0 20.2 21.1 18.7 17.6 21.4 21.0 22.2 19.2 21.0 7.2 7.5 6.7 6.3 7.7 6.8 8.0 6.8 7.6 6.5 7.0 6.2 5.7 7.2 6.2 7.2 6.2 7.0 red w e white white0 white e wie white white 9 4 5.2 6 7 9.5 7.9 7.3 280 320 265 235 230 320 280 305 255 15.1 14.4 13.6 14.8 15.3 15.1 15.3 15.1 15.1 15.3 14.6 14,2 14.9 15.5 15.3 15.7 15.3 15.2 30.6 29.2 23.9 28.6 28.8 28.0 28.4 28.1 32.9 35.0 34.6 29.2 29.1 28.4 30.6 31,7 30.6 34.6 35.4' 34.2 30.0 31.8 29.6 33.5 32.5 33.5 43.0 42.0 36.6 37.4 41.7 42.8 39.5 35.8 39.6 51.4 53.9 49.8 41.2 45.9 43.2 51.6 53.5 51.6 53.7 -58.0 52.3 52.6 55.6 54.0 58.8 54.0 56.1 11,5 10.9. 8.7 10.6 .10.7 10.4 10.5 10.4 12.5 13.4 13.2 10.9 10.8 10.5 11.4 11.9 11.5 13.2 13.5' 13.0 11.2 12,0 11.0 12.7 12.3 12.8 17.2 1.6.5 14.1 14.4 16.5 17.0 15.4 13.7 15.4 21.5 22.7 20.6 16.2 18.6 17.2 21.5 22.5 21,5 22.5 -25.1 21.8 22.1 23.6 22.8 25.5 22.8 24.0 33.9 33.3 35.3 32.9 32.6 27.5 30.7 28.9 28.0 28.8 28.4 32.8 31.2 31.4 27.3 29.5 26.9 26.3 28.4 28.4 32.4 30.2 30.6 27.2 29.0 24.1 19.3 22.9 25.1 23.0 20.5 21.6 20.2 25.9 17.3 10.1 8.7 15.9 19.6 16.5 19.6 8.9 9.0 7.1 7.1 -3.8 10.0 8.6 '9.0 3.6 3.0 3.9 5.5 47.1 .46.4 49.8 47.8 46.2 42.8 47.1 44.1 44.4 44.1 42.8 49.4 46.9 44.3 42.8 47.5 42.7 42.4 42.7' 42.5' 49.4 45.6 44.4 42.2 45.6 39.9 34.7 38.9 39.0 39.4 36.4 38.1 36.1 42.9 31.6 21.0 17.9 31.2 35.7 31.3 34.8 18.7 21.1 16.1 15.4 S8.8 22.6 18.7 20.4 9.0 8.0 9.5 12.6 alm.on white. white white white white .white white welte 1 white white white white white white white cream white white white white white white whitee whi S white white white white white white white white.white white white white white white pre white white -white white ---e 340 200210 260 330 290 300 ,. 360' 230 _505 290 520:. 460 480 . .660 .46 .570 6 -S630 -178 1910 2200 500, -2420 2585 3090 -20 2760 2940, 3170., 360 3200 ,.'. +

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39 Table 2. continued County RSANTA WALT N WASHINGTON ROSA Locality P. Weller ThompCha Hi Tract ertv. Property Material Crude Crude .Crde .Lower ' Upper aterialWhite White White Clay Clay Sample0-450 0-330 0-413 0-399 0-418 dcruen analysis +35 mesh 35.1 54.9 54.0 0 0 -35 +100 56.2 36.6 32.3 1.5 1,7 -100 +200 1.1 1.6 4.5 2.9 3.4 % Mica ---. % Kaolin 8.2 6.9 12.7 95.6* 94.9* Forming and'drying Water of plasticity 49.4 48.2 51.8 50.0 43.3 Shrinkage Volume 24.7 19.4 18.3 22.6 18.3 Linear (Calc.) 9.0 7.0 6.5 8.2 6.5 Linear (Meas.) 8.5 6.2 6.0 7.5 6.0 Washed color white white white wgim eCm Slaking time (Min.) 8 16 14 22 2 Transverse strength 190 170 190 140 120 Firing behavior Ignition loss Cone 010 (9500C) 14.0 14.6 13.9 13.2 13.0 Cone 05 (1050°C) 14.3 14.7 14.3 13.'5 13.6 Total shrinkage Volume Cone 010 (9501C) 30.0 29.!I 28.0 27.6 24.3 Cone 05 (1050°C). 32.9 32.1 30.9 30.5 28.8 'Cone 1 (11500C) 34.2 32.5 30.9 35.4 29.6 Conj 7 (1270°C) 41.2 53.1 46.5 50.6 39.9 Cone 10 (13300C) 55.1 56.4 50.6 59.3 58.8 Cone 15 (14300C) 57.6 60.9 60.1 62.6 58.8 L.near (Calc.) Cone 010 11.2 10.5 10.4 10.2 8.8 Cone 05 12.4 12.1 11.6 11.4 10.7 Cone 1' 13,0 12.3 11.6 13.5 11.0 C*one 7 16.2 22.3 18.8 21.0 15.6 Cone 10 23.4 24.1 21.0 25.8 25.5 Cone 15 24.9 26.7 26.2 27.5 25.5. Absorption Cone 010 35.2 35.1 36.8 33.4 35.6 Cone 05 34.4 -30.1 35.6 30.2 30.9 Cone 1 33.6 .30.1 35.2 29.0 30.3 Cone 7 25.5 .13.5 19.8 15.6 17.1 Cone 10 12.5 8.4 15.5 5.0 7.1 Cone 15 3.7 3.7 5.1 3.4 6.2 Apparent porosity Cone 010 ' 50.0 48.8 49.1 45.4 50.0 Cone 05 50.3 , 44.7 49.9 42.6 46.2 Cone 1 50.0 44.5 49.4 41.9 45.5 Cone 7 42..6 .28.0 35.4 30.8 31.6 Cone 10 27.4 18.8 30.0 11.418.0 Cone 15 ' 10.0 .9.4 13.3 8.7 16,0' Colot ..! Cone 010 white white flesh flesi Cone 05 white white white flesh flesh: Cone 1 white white white white white Cone 7 white white white cream cream, Cone 10 white white white ale e ! Cone 15 purple light light brown brown. ;. svee s white purple purple green green j| Transverse strength Cone 010 210 220 210 220 Cone 05 ----Cone 1 340 380 320 450 -. Cone 7 1640 --1860 '! Cone 10 1880 1880 1640 2630 -BI Cone 15 ---.*:2890 ! : :: teel hard at cone 4 -. 4TT' . Stonewae olay ao kaoln .

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20 PART II THE CLAYS OF NORTHERN FLORIDA GENERAL STATEMENT This report deals primarily with the determination of the characteristics of common clays, in regard to their suitability for use in the manufacture of ordinary heavy clay products, chiefly common brick, face brick, and various kinds of tile. The area from which samples were taken is designated as Northern Florida and includes that portion of the State which lies north and west of the southern limits of Dixie, Gilchrist, Alachua, Putnam and Flagler counties. The samples were collected in 1928 and 1929 by James H. C. Martens and were analyzed by Dr. Martens in the clay testing laboratory then operated by the Florida Geological Survey. Standard procedures were used in the determination of the data listed in Table 3: Physical and Firing Properties of Florida Clays, Dr. Martens found it necessary to classify the slaking properties as: "fast", "medium", "slow", and "very slow", rather than to use standard data form because consistent results could not be obtained and in some cases the clay cubes remained almost intact after more than two months immersion in water. The clay localities reported in Dr. Martens' manuscript are here grouped according to counties and the counties are arranged in alphabetical order. The sample numbers used in the description of each deposit are the same as those listed in Table 3. Description of Deposits by Counties ALACHUA COUNTY Campville Location of pit: pne-half mile north of Campville on the Seaboard Air Line Railroad at the abandoned plant of the Campville Brick Company.

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21 Section exposed: 1. Soil, loamy sand 2 feet 2. Clay, very sandy, light gray 6 feet 3. Sand, fine, white 3 feet 4. Clay, mottled gray and red 5 feet Samples collected and tested: 0-216 Mottled gray and red clay representing bed 4. 0-217 Clay and sand representing beds 2, 3, and 4. Utilization: Common brick; medium refractory brick. Hawthorn Location of exposure: One mile north of Hawthorn and one-quarter mile east of the Seaboard Air Line Railroad on the H. D. Fry farm. Section exposed: Four feet of red clay in field. Sample collected and tested: 0-218 Red clay representing the four foot bed. Utilization: A poor grade of common brick could be made from this clay. BAY COUNTY Panama City Location of pit: On the farm of Jacob Godert, eleven miles east of Panama City and 1,000 feet north of new road to Wewahitchka. Section exposed: 1. Overburden, grayish yellow sand 2. Light gray clayey sand 3 feet 3. Light gray clay 2 feet Samples collected and tested: 0-154 Light gray clay, bed 3. 0-265 Mixture of two parts light gray clay, bed 3, with three parts of gray clayey sand, bed 2. Utilization: Suitable for face brick. CALHOUN COUNTY Blountstown Location of plant and pit: Southeast edge of Blountstown, at the Holmes

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22 Brothers Brick Yard. Section exposed: 1. Soil overburden 6 inches 2. Alluvial clay 4 to 9 feet Sample collected and tested: 0-103 Alluvial clay, bed 2. Utilization: Common brick; may be suitable for pottery and tile. Darling Slide Location of exposure: At Darling Slide on the left bank of Chipola River, southwest of Blountstown. Section exposed: 1. Sand, grayish yellow 6 feet 2. Sand, clayey, orange 8 feet 3. Sloping bank, no exposure 8 feet 4. Clay, very sandy, yellow 4 feet 5. Clay, very sandy, dark gray 4 feet 6. Shell marl 20 feet Samples collected and tested: 0-104 Dark gray clay, bed 5. 0-105 Yellow clay, bed 4, UTILIZATION: Useless for the manufacture of any burned clay product. CLAY COUNTY Green Cove Springs Location: North edge of Green Cove Springs at the abandoned pit of the former Clay County Steam Brick Company. Section exposed: 1. Soil, fine, light gray sand 1 foot 3 inches 2. Clay, mottled gray and brown 4 feet 3. Sand, fine, clayey, mostly reddish brown 3 feet 4. Sand, fine, nearly white 2 feet Samplse collected and tested: 0-201 Clay and clayey sand representing beds 2 and 3. 0-229 Clay, bed 2.

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23 Utilization: A poor quality of common brick. Russell Location of pit: One mile northeast of Russell Station near small branch of Black Creek at site of former Russell Brick and Tile Company. Section exposed: 1. Top soil overburden 1 foot 2. Clay, grayish yellow 6+ feet Sample collected and tested: 0-202 Grayish yellow clay, bed 2. Utilizationt Suitable for face brick, drain tile, and an excellent grade ef common brick. Middleburg Location: An abandoned brick plant is located on the left bank of Black Creek, two miles northeast of Middleburg and the abandoned pit is about 0.3 mile north of the barge landing. Section exposed: 1. Soil, fine, gray sand 8 inches 2. Clay, brown, sandy 2 feet 3. Clay, gray and brown, very tough 5 feet Sample collected and tested: 0-208 Gray and brown clay representing beds 2 and 3. Reserves: Clay is exposed throughout sections 1 and 2, T. 5 S., R. 24 E., on the highway from Doctors Inlet to Middleburg. The top of the clay is about 20 feet above Black Creek and little or no overburden is present. Utilization: This clay is suitable for face brick, common brick, drain tile and hollow ware. DUVAL COUNTY Dixton Location of plant and pit: On the Atlantic Coast Line Railway at Dixton, near the west side of Doctors Lake. The pit of the abandoned Gamble and Stockton Company is situated between the railroad and the Lake.

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24 Section exposed: 1. Soil Thin 2. Clay, brown, sandy 3 to 4 feet 3. Clay, gray or blue-gray, tough 8 feet Sample collected and tested: 0-205 Gray, blue-gray and brown clay representing beds 2 and 3. Utilization: The Gamble and Stockton Company formerly produced face brick and common brick. The clay is also suitable for hollow block and drain tile. ESCAMBIA COUNTY Molino (1) Location of plant and pith On the Louisville and Nashville Railroad, about one mile north of Molino at the site of the former Dolores Brick Company. Section exposed: 1. Soil, sandy and pebbly loam 1 foot 2. Clay, reddish brown, friable 3 feet 3. Clay, mottled brown, yellow and gray, tough 5 to 6 feet 4. Sand 8 inches 5. Clay, gray mottled with brown tough 4+ feet Samples collected and tested: 0-189 Clay, gray mottled with brown, bed 5. 0-190 Clay representing average of beds 2, 3, 4, and 5. Utilization: The Molino clay is suitable for hollow buidling tile and drain tile as well as common and face brick. (2) Location of plant and pit: On the Louisville and Nashville Railroad about two miles north of Molino at site of former Build-with-Brick Company. Section exposed: 1. Soil, gray loam 6 inches 2. Clay, sandy, yellow and red 3 feet 3. Clay, gray mottled with light brown, yellow and red 14+ feet Sample collected and tested: 0-170 Clay representing beds 2 and 3

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25 Utilization: The Build-with-Brick Company manufactured common brick; the clay is also suitable for face brick, hollow building tile and drain tile. Century Location: Road cut on U. S. Highway, adjoining the property of W. H. Wiggins and one and onu-half miles south of Century. Section exposed: 1. Sand, orange 5 to 12 feet 2. Clay, mottled gray and brown 6+ feet Sample collected and tested: 0-175 Clay representing bed 2. Utilization: Suitable for common brick, face brick and drain tile. Pine Barren (1) Location of deposit: On the McMillan Mill Company property, 500 feet northwest of Pine Barren Station. Section exposed: 1. Soil, sandy loam with few pebbles 1 foot 2. Clay, mostly yellow 3 feet 3. Cl.y, gray spotted with red 5+ feet Samples collected and tested: 0-183 Gray, tough clay, bed 3. 0-184 Average of 8 feet of clay, beds 3 and 5. Reserves: In areal extent and thickness the clay beds are adequate for commercial development. (2) Location of deposit: On the McMillan Mill Company property, four miles northwest of Pine Barren, clay exposed in gully adjacent to road. Section exposed: 1. Black muck 3 feet 2. Sand, light gray, pdbbly 4 feet 3. Clay, light gray 6+ feet Sample collected and tested: 0-185 Light gray clay representing bed 3.

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26 Utilizationt Fired at cone 010 the clay is suitable for light colored face brick. Above cone 3 the porosity is reduced to nearly zero and the color becomes very dark. (3) Location of out: Road cut 2.8 miles north of Pine Barren Creek. Section exposed: 1. Soil, loam 1 foot 2. Clay, mottled gray, red and yellow 4 feet 3. Sand, fine, clayey, orange, streaked with gray and yellow 3 feet 4. Clay, tough and plastic, mottled brown and light gray 12+ feet Samples collected and tested: 0-181 Clay and sand representing beds 2, 3, and 4 0-233 Tough, plastic clay representing bed 4. Reserves: Ample -an extensive deposit. Utilization: Either the lower clay or the mixture is suitable for drain tile and non-vitrified structural products. McKinnonville Location: Clay exposed in roadside gully near base of slope on east side of Boggy Creek, 0,8 mile west of McKinnonville. Section exposed: 1. Sand with quartz pebbles 2 to 4+feet 2. Clay 5 feet Sample collected and tested: 0-176 Clay representing bed 2. Utilization: The clay has excellent working qualities and burns hard at cone 010 for good common brick. It is also suitable for face brick. Muscogee Location: Various localities in the vicinity of Muscogee. Two typical exposures are located: (1) On the hillside south of railway crossing 2 miles east of Muscogee. Section exposed: 1. Sand and orange clay with pebbles of sandstone 2 to 4.feet 2. .Clay, plastic, gray, pink and yellow 31 feet 3. Sand, clayey,.mottled gray, red and yellow 2 feet 4. Sand, yellow, cross-bedded, limonitic at top 3+ feet

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27 Sample collected and tested: 0-166 Plastic clay, bed 2. (2) In out on Frisco Railway, 3 miles east of Muscogee. Section exposed: 1. Orange sand containing limonitic concretions 3 feet 2. Laminated to thinly bedded clay and fine sand 7 feet Sample collected and tested: 0-167 Clay and sand, bed 2. Utilization: These clays would make an excellent light-colored face brick, however, the size of the individual deposits is limited. Yniestra: Location of exposure: Road cut on the Scenic highway at Yniestra. Section exposed: 1. Sand, brown, loose 4 feet 2. Clay, red and gray 4 feet 3. Sand, yellow, coarse 1 foot 4. Sand, gray, clayey 3 feet 5. Clay, gray, sandy 6 feet 6. Clay, very plastic, gray and pink 3 feet 7. Sand, red, clayey 4 feet Samples collected and tested: 0-165 Plastic clay, bed 6. 0-230 Clay and sand, a mixture of beds 2, 4, 5, and 6. Utilization: The mixture is suitable for a good light colored face brick. The gray plastic clay probably could be used for pottery, however, the overburden is excessive at this locality for mining this clay. McMillan Location of deposit: The old workings of abandoned brick plant extend about 1500 feet along the east side of the Louisville and Nashville Railroad south of Pine Barren Station. Section exposed: 1. Overburden, soil 1 foot 2. Clay, sandy 4 feet

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28 Sample collected and tested: 0-186 Clay and soil representing beds 1 and 2. Utilization: Suitable for a fair grade of common brick. FLAGLER COUNTY Bikes Prairie Location of deposit: At side of drainage ditch on Bikes Prairie 2,000 feet south of St. Josephs landing on East Coast canal. Section obtained by post hole auger: 1. Top soil, black, muckyclay 1 foot ,. Clay, gray to cream, calcareous 3 feet 3. Clay, gray, contains decayed vegetation 8 inches 4, Marine shells and sand thickness not determined Sample collected and tested: 0-224 Clay representing bed 2. Utilization: The high lime content of this clay makes it worthless for fired products. Black Point Location of deposit: Near Black Point, approximately 31 miles westsouthwest of Bunnell in the southern portion of Sec. 17, T. 12 S., R. 30 E. Section exposed: 1. Soil, black, mucky clay 6 inches 2. Dark clay 4 feet Sample collected and tested: 0-225 Dark clay, bed 2. Utilization: Suitable for a fair quality of common brick, however, the clay contains too much water to be worked satisfactorily. Haw Creek Location of deposit: The clay is found in vicinity of Haw Creek, southwest of Bunnell. Two localities are given to illustrate the general characteristics of the deposits (1) A clay exposure in a roadside ditch, 500 feet north of Haw Creek, one mile east and 0.2 mile south of Haw Creek Church.

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29 Section exposed:. 1i, Soil 8 inches 2. Clay 6+ feet Sample collected and tested: 0-223 Clay representing bed 2. Utilization: This clay contains no calcareous material and adequate reserves are indicated for commercial development. It is suitable for common brick, hollow block and drain tile. (2) West side of Middle Haw Creek, 7 miles southwest of DuPont. Ed Roberts abandoned brick plant. Section exposed: 1. Gray loam 6 inches 2. Sandy clay, gray with streaks of yellow near top 5 feet 3, Clay, gray, very plastic 4 feet 4. Sand, fine, gray 1 foot Samples collected and tested: 0-226 Sandy clay, bed 2. 0-228 Clay representing beds 2 and 3. Utilization: The sandy clay was dug by hand and used to make common brick. The mixture of plastic clay and sandy clay is suitable for face brick, hollow block and drain tile as well as common brick. St. Johns Park Location of deposit: The clay occurs below a thin soil overburden in the field opposite the post office of St. Johns Park and one-half mile east of the boat landing, Section exposed: 1. Fine, sandy, clay loam 1 foot 2. Clay 4ifeet Sample collected and tested: 0-222 Clay representing bed 2. Utilization: Suitable for the manufacture of common brick. GADSDEN COUNTY Havana Location of pit: At abandoned Tallahassee Pressed Brick Company plant

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30 a,4.jacent to Georgia, Florida and Alabama Railroad on the flood plain of the Ocklocknee River, Havana. Section exposed: About five feet of alluvial clay overlain by six inches of soil. Samples collectd and tested: 0-114 Clay from abandoned pit. 0-115 Clay from pit one-quarter mile west of abandoned plant. Utilization: Formerly used to manufacture a good grade of common brick. Quincy (1) Location of pit: One mile north of Quincy on the property of Floridin Company, Incorporated. Samples collected and tested: (October, 1928) 0-153 Fuller's earth 0-152 Brown clay overburden 4 feet Utilization: The analysis of fuller's earth is included for comparative purposes. The overburden clay is suitable for common brick. (2) Location: In road cut on west slope of the Little River valley, five miles east of Quincy. Section exposed: 1. Sand, brown, rather coarse 1 foot 2. Clay, weathered fuller's earth 2 feet 3. Clayey sand 2 feet 4. Pale-greenish clay containing fine sand 3 feet Sample collected and tested: 0-116 Clay and sandy clay representing beds 2, 3, and 4. Utilization: The clay is suitable only for soft common brick. (3) Location of deposit: Alluvial clay from valley flat of Little River, five miles east of Quincy, near Georgia, Florida and Alabama Railroad crossing. Section exposed in river bank: 1. Top soil, silty loam 1 foot 2. Clay, very sandy 2.5 feet 3. Sand, fine with little clay 1.5 feet 4. Clay, tough, gray, with little sand 2 feet

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31 Sample collected and tested: 0-117 Average sample of beds 2, 3, and 4. Utilization: Not suitable for burned products because of the excessive sand content and small quantity of uniform reserves. Midway Location of deposit: Midway, Section in pit: 1. Soil and sand 2 to 4 feet 2. Clay 8 feet 3. Clayey sand with some marl 15 feet 4. Fuller's earth 10 feet Sample collected and tested: 0-150 Light gray to yellowish, very fine grained clay, representing bed 2. Utilization: The clay has poor plasticity, dxcessive air shrinkage and a tendency to crack on firing. River Junction Location of deposit: On flood plain of Apalachicola River, adjacent to Louisville and Nashville Railway trestle crossing Apalachicola River, about one mile west of River Junction. Section exposed in pit: 1. Clayey soil, dark brown 1 foot 2. Clay, brown, silty 3 feet 3. Clay, reddish silt 2 feet 4. Sand, water-bearing Thickness unknown Sample collected and tested: 0-140 Brown and reddish silty clay representing beds 2 and 3. Utilization: Used by State owned brick plant to make common brick. GULF COUNTY Port St. Joe Location of exposure: In roadside ditch seven miles north of Port St. Joe on Highway No. 6 and a few feet north of the canal crossing.

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32 Section exposed: 1. Yellowish-brown, clayey sand 2.5 feet 2. Clay, mottled gray and reddish, sandy in upper part; bottom not exposed 3 feet Sample collected and tested: 0-118 Mottled gray and reddish clay representing bed 2. Utilization: Suitable for manufacture of common brick. Wewahitchka Location of exposure: In a ditch on the roadside, 800 feet north of the Lake Grove hunting and Fishing Club's club house on their property at the south end of Dead Lake. Section exposed: 1. Sandy loam 1.5 feet 2. Alluvial clay, mottled yellow and red 2 feet Sample collected and tested: 0-120 Mottled yellow and red clay, bed 2. Utilization: Suitable for a fairly good grade of common brick. HOLMES COUNTY Argyle, four miles east of Location of deposit: About four miles east of Argyle and one-quarter mile downstream from Scott's Mill in a bluff on the left bank of Sandy Creek. Section exposed: 1. Sand, coarse, orange 2 to 25 feet 2. Sand, fine and clayey 12 f'et 3. Clay, dark gray to black 3 feet 4. Clay, gray, yellow and brown 3.5 feet 5. Sand, mostly fine grained 21 feet Samples collected and tested: 0-137 Clay, bed 3. 0-138 Clay, bed 4. 0-231 Sand and clay, beds 2, 3, and 4. Utilization: The mixture with sand, sample 0-231, is satisfactory for common brick.

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33 Ponce de Leon. 3.3 miles north of Location of exposure: About 3.3 miles north of Ponce de Leon in a prospect pit near foot of hill. Section exposed: 1. Red sand Minimum of 2 feet 2. Clay, grayish-yellow 6 feet Sample collected and tested: 0-158 Grayish clay, bed 2. Utilization: Has higher shrinkage than desirable but may be suitable for good common brick or face brick, Ponce de Leon, 4 miles west of Location of exposure: In a gully just north of milepost 737 on the Louisville and Nashville Railway. Section exposed: 1. Sandy loam with few pebbles 1 foot 2. Fine, clayey sand, mostly red 5 feet 3. Clay, light gray and red 5 feet Sample collected and tested: 0-197 Clay and clayey sand representing beds 2 and 3. Utilization: The 10-foot section of clayey sand is suitable for common brick. JACKSON COUNTY Cottondale Location of pit: Three miles south of Cottondale on the Kynesville Road at abandoned A. J. Barbour Brick Plant. Section exposed: 1. Overburden -top soil 1/2 foot 2. Gray clay 7 feet Sample collected and tested: 0-109 Gray clay, bed 2. Utilization: Suitable for nearly white to light cream-colored face brick or common brick.

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34 Marianna (1) Location of pit: About .two miles south of Marianna, on property of Florida Industrial School for Boys, Section exposed: 1. Sand, grayish-orange 1 foot 2. Sand, clayey, mottled gray, yellow and red 6 feet 3. Clay, sandy, mottled gray, yellow and red 5 feet 4. Clay, brown, with black spots 4 feet Samples collected and tested: 0-237 Average of entire section, beds 1, 2, 3, and 4. 0-121 Brown clay, bed 4. Utilization: The mixture is not well suited for common brick and the lower clay, bed 4, has too high shrinkage for any burned products. (2) Location: Four miles northwest of Marianna on property of Marianna Limestone Products Company. Section exposed: Residual clay, above Ocala limestone. Sample collected and tested: 0-122 Dark red (oxidized) and pale grayish-green, residual clay. Utilization: The 'clay has too high shrinkage to be of value

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35 Roud Lake Location of exposure: Deep railway cut through hill north of Round Lake Station. Section exposed: 1. Sand, light gray 3 feet 2. Sand, mottled red, yellow and gray 4 feet 3. Sand, orange, coaroe with quart$ pebbles 5 to 7 feet 4. Clay, pink, very plastic 6 to 7 feet 5. Sand, light yellow to brown, coarse 2 feet 6. Sand, clayey, dard red to brown 1 feet 7. Clay, mottled yellow and grayishred, sandy but plastic 2j feet 8. Sand, slightly clayey 5 feet Samples collected and tested: 0-123 Pink clay, bed 4. 0-241 Sand and clay mixture, beds 4, 5, 6, and 7. 0-242 Sand and clay mixture, beds 2, 3, 4, 5, 6, and 7. Utilization: Soft, porous common brick. JEFFERSON COUNTY Wacissa Location of deposit: One and one-half miles east of WacisSa near milepost 822 on the Seaboard Air Line Railway (line abandoned) Log of test boring: 1. Sand, light gray, fine grained 2 feet 2. Clayey sand, brown, fine grained 1/2 foot 3. Clay, mottled light gray and red, containing fine sand 5 feet 4. Sand, white, fine grained 1 foot 5. Clay, crumbly, light gray 3 feet 6. Water-bearing limestone Thickness unknown Sample collected and testedt 0-263 Clay and sand, beds 2, 3, 4, and 5, representing 91 feet of section, Utilization: Rather porous common brick,

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36 LEON COUNTY Woodville Location of pit: Clay pit for road material, eight miles south of Tallahassee and three-quarter mile north of Woodville, east side of highway. Section exposed in auger boring: 1. Overburden, fine grain sand grading into yellow sand at depth 3 feet 2. Clayey sand, yellowish-brown 1 foot 3. Clayey sand, mottled red and gray 2 feet 41 Clay, gray with spots of red, yellow and brown, contains some sand 6 feet 5. Clay, gray and yellow l feet 6. Limestone, water-bearing Thickness unknown Sample collected and tested: 0-259 Clay and sand representing beds 2, 3, 4, and 5. Utilization: Suitable for making common brick. LIBERTY COUNTY Alum Bluff Location of deposit: Alum Bluff, approximately 3 miles north of Bristol. (1) Section exposed: Seven-foot cut of brown clay resulting from the weathering of the upper part of the shell-bearing bed, north end of Alum Bluff. Sample collected and tested: 0-100 Residual brown clay. Utilization: Would make poor quality common brick. (2) Section exposed: Sandy, silty clay above shell marl, 1/2 mile downstream from north end of bluff. Samples collected and tested: 0-101 Slightly weathered gray, sandy clay. 0-102 Unweathered, dark greenish-gray, sandy clay. Utilization: No value, soft and friable when burned.

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37 Bristol Landing Location of deposit and abandoned plant: Near Bristol at Bristol Landing on the Apalachicola River. Section exposed; The old pit and river bank exposes 5 feet of red and gray clay with one foot or less of sandy, soil overburd. en. Sample collected and tested: 0-141 Representative clay from alluvial deposit. Utilization: Suitable for common brick, face brick and drain tile. Estiffanulga (1) Location of deposit: At Estiffanulga Landing on the Apalachicola River, a bluff extends along the outside of a large bend in the river for about one-half mile, Section exposed: Near the top of this bluff is exposed from 5 to 10 feet of alluvial clay. Sample collected and tested: 0-143 Representative clay from upper clay layer at Estiffanulga Bluff. Utilization: The clay has excellent working and drying properties and is suitable for face brick, common brick, hollow block ware, drain tile and red earthenware. (2) Location of exposure: Along roadside 2.7 miles north of Estiffanulga Landing and 8.4 miles south of Bristol. Section exposed: Thin soil overburden and 3 feet of alluvial clay. The bottom of clay not exposed. Sample collected and tested: 0-142 Representative sample from 3-foot exposure. Utilization: This clay is suitable for drain tile, face brick, and common brick of excellent quality. NASSAU COUNTY Callahan (1) Location of pit: On property of former Georgia-Carolina Brick company plant on the Seaboard Air Line Railroad near its intersection with the Atlantic Coast Line, Callahan. Section exposed in pit: The deposit worked is six to twenty feet thick with only a foot of overburden. The ground water

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38 level is only two or three feet below the surface and it is necessary to pump water from the pit. Sample collected and tested: 0-144 Clay from pit, probably more sandy than the average, Utilization: Common and face brick and suitable for common structural materials where a vitrified product is not essential. (2) Location of exposure: In roadside ditch two miles north of Callahan on U. S. Highway No. 1. Section exposed: One foot of sandy, soil overburden and at least five feet of clay. Sample collected and tested: 0-145 Sample representative of clay exposed. Utilization: Suitable for common brick, face brick and drain tile. Boulogne (1) Location of exposure: Highway cut at south end of the St. Marys River bridge on U. S. Highway No. 1, one mile east of Boulogne. Section exposed: 1. Sand, grayish-yellow 3 feet 2. Clayey sand, yellow 1 foot 3. Clayey sand, mottled orange and gray 2 feet 4. Plastic clay, gray and red 5 feet 5. Sand, clayey, to base of cut 1 foot Samples collected and tested: 0-147 Plastic clay, bed 4. 0-264 Mixture of equal parts of clay, bed 4, with sandy clay, beds 2 and 3, Utilization: Both the plastic clay and the sand-clay mixture are suitable for common brick. (2) Location.of deposit: On hillside of Pigeon Creek, 0.7 mile east of U. S. Highway No. 1 bridge across St. Marys River and nearly two miles east of Boulogne, Section exposed: 1., Sand, gray and yellow 2 feet 2. Clay, mottled red, gray and yellow 6 feet 3. Clayey sand, yellow, gray and red 15 feet

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39 Sample collected and tested: 0-148 Clay representing bed 2. Utilization: Either common or face brick of good quality could be made from this clay. Orange Bluff Location of deposit: Adjacent to St. Marys River at Orange Bluff. Section exposed: Clay thickness unknown, thin, sandy, soil overburden. Sample collected and tested: 0-149 Clay, typical Utilization: Well suited for common and face brick. Brickyard Landing St. Mays River Location of pit: Abandoned brick plant site four miles southeast of Kings Ferry. Section obtained by clearing off natural bank and by auger: 1. Soil, sandy loam 6 inches 2. Clay, mottled gray and red 2 feet 3. Sandy clay, gray 6 feet Sample collected and tested: 0-213 Clay representing beds 2 and 3. Utilization: Well suited for common brick manufacture. OKALOOSA COUNTY Milligan Location: Roadside bank and ditch on east side of small creek valley, 2.3 miles west of Milligan on U. S. Highway No. 90. Section exposed: 1. Sandy soil overburden 1 foot 2. Clay, upper portion brown to reddish and crumbley; lower portion gray mottled with red and yellow and fairly tenacious 7 feet 3. Fine clayey sand, mottled light gray and yellow (bottom not exposed) 3 feet

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40 Samples collected and tested: 0-193 Clay representing bed 2. 0-232 Clay and clayey sand representing beds 2 and 3. Utilization: Both samples indicate the material to be satisfactory for good, red, common brick. PUTNAM COUNTY Springside Location of deposit: Brick clay is exposed at a number of places in the vicinity of Springside. The sample was taken onehalf mile northeast of Springside Station. Section expos.ed: Auger boring encountered one foot soil overburden and four feet of clay. Sample collected and tested: 0-209 Brown Clay. Utilization: Suitable for good common brick. Woodburn Location: In roadside ditch, 400 feet northwest of bridge over Rice Creek. Section exposed: 1. Sandy loam overburden 1 foot 2. Sandy clay, mottled gray and yellowish-brown 5 feet Sample collected and tested: 0-219 Sandy clay representing beds 1 and 2. Utilization: Suitable for common brick. Orange Mills Location of clay exposure: In large drainage ditch adjacent to Highway 206, two miles northeast of Orange Mills. Section exposed: 1. Dark gray loam overburden 1 foot 2. Clay, upper portion dark gray; lower portion light gray, spotted with yellow, irregularly streaked with sand 51 feet 3. Fine gray sand 4 feet

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41 Sample collected and tested: 0-221 Clay representative of bed 2. Utilization: Suitable for manufacture of good, red, common brick. Hopkins Point Location: Hopkins Point, about 4 miles south-southeast of Crescent City. Section exposed by auger: 1. Overburden, dark clayey loam 6 inches 2. Gray clay (lower portion contains a few calcareous concretions) 4 feet Sample collected and tested: 0-220 Clay representative of beds 1 and 2. Utilization: With proper preparation suitable for good, red common brick. ST. JOHNS COUNTY Hastings LocAtion of exposure: In roadside ditch on State Highway No. 207, 500 feet west of bridge over Deep Creek and 1.4 miles east of Hastings Station. Section exposed: 1. Gray loamy, sand overburden 1 to 1l feet 2. Clay, mottled gray and brown 4 feet Sample collected and tested: 0-210 Clay representing beds 1 and 2. Utilization: Suitable for good grade of common brick. SANTA ROSA COUNTY East Branch Coldwater River Location of exposure: In section 8, township 4 north, range 27 west, on right bank of East Branch of Coldwater River. Section exposed: 1. Overburden, sand and fine gravel 10 feet 2. Clay,, light gray and yellow 3 feet 3. Clay, gray, with pyrite concretions 3 feet

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42 i Clay, light red 41 feet Samples collected.and tested: 0-106 Light gray clay, bed 2. 0-107 Gray clay, bed 3. 0-108 Light red clay, bed 4. Utilization: All suitable for good face brick or common brick either alone or mixed with other clays. Allenton School Location of pit: Twelve miles north of Milton and a few hundred feet west of Highway No. 87 at site of temporary brick plant operated in 1922 by G. H. Murphy, Glendale. Section exposed: 1. Sand overburden 1 to 2 feet 2. Brown sandy clay 2 feet 3. Gray clay (bottom not exposed) 4 feet Sample collected and tested: 0-173 Clay representing beds 2 and 3. Utilization: Common brick. Crow Bridge, West Branch Coldwater River Location of exposure: In bluff and roadside gully on right bank of West Branch Coldwater River a short distance downstream from Crow Bridge on Highway No. 87, approximately 11.5 miles north of Milton. Section exposed: 1. Sand overburden minimum thickness 3 feet 2. Gray clay, tough and laminated 8 feet 3. Limonitic sandstone 1 inch 4. Ocherous clay 8 to 12 inches Sample collected and tested: 0-174 Gray clay, bed 2. Utilization: Suitable for common or face brick, hollow block or drain tile. Milton (1) Location of deposit: On Kehoe farm, 24 miles northeast of Milton, 200 feet west of west bank of river.

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43 Section expdsed:. 1. Dark gray loam soil overburden 1 foot 2.' Brown silty clay 2 feet Sample collected and tested: 0-139 Brown alluvial clay, bed 2. Utilization: Suitable for common and face brick. (2) Location: Abandoned brick yard site near residence of C. T. Brown, on west bank of Blackwater River, five miles northeast of Milton. Section exposed: 1. Soil overburden, grayishyellow loam 1 foot 3 inches 2. Clay 3 feet 3. Clayey sand, gray and brown 2 feet Sample collected and tested: 0-160 Clay, bed 2. Utilization: Suitable for excellent light colored face brick. WALTON COUNTY Paxton Location of deposit: One-quarter mile south of the railroad at Paxton. Section exposed in gullied ditch: 1. Overburden, grayishyellow sand 1 foot 2. Coarse orange sand 2 feet 3. Silty clay, gray, red and orange 7 feet Sample collected and tested: 0-195 Silty clay, bed 3. Utilization: Suitable for light colored face brick or common brick. Red Bay Location of bed sampled: At a spring one mile east of Red Bay post office Section exposed: Measured section not taken because overburden is too heavy for commercial exploitation of clay. Sample collected and tested:

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44 O-3-36; Dar.urwecathered. clay representing first two feet above top of fossiliferous shell marl. Utilization: Suitable for common brick. Arggle Location: In road cut four miles southeast of Argyle on the road to Knox Hill. Section exposed: 1. Soil overburden 8 inches 2, Clay (bottom not reached 5 feet Sample collected and tested: 0-157 Clay representing bed 2. Utilization: None. WASHINGTON COUNTY Caryville Location of exposure: At Caryville from borrow pit along approach to bridge across Choctawhatchee River. Section exposed: 1. Overburden, gray and yellow sand 1.5 feet 2. Alluvial clay 4 feet Sample collected and tested: 0-198 Alluvial clay bed 2. Utilization: Suitable for common brick. Chipley Location of plant and pit: Two miles southwest of Chipley at brick plant of Peaden Materials Company (formerly Hall Brick Yard). Section exposed: 1. Overburden 1/2 foot 2. Gray clay 3 to 6 feet Sample collected and tested: 0-127 Gray clay, bed 2.

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45 UtilizationLightfgray, plnk or cream-colored face brick, common brick, or semi-refractory brick. Vernon (1) Location of plant and deposit: One mile south of Vernon at site of abandoned Vernon Brick Company, Section exposed in pit: Not measured but the 4to 5-foot layer of redcolored clay bed with sand above and below it was sampled. Sample collected and tested: 0-124 Red clay. Utilization: Will make good common brick. (2) Location of exposure: Three miles southeast of Vernon on south side of Cravey's Mill Creek. Section exposed: Measured section not available. Light gray clay streaked with red is probably thicker than three feet. Sample collected and tested: 0-126 Very plastic light gray clay.. Utiiization: Suitable for smooth light-colored face brick. (3) Location: Exposed in road cut three miles south of Vernon on road to Greenhead. Section exposed: 1. Soil, loose sand 1.5 feet 2. Sandy clay, dark red 2 feet 3. Clay, red and light gray 4 feet 4. Clayey sand, yellow and light gray 5+feet Sample collected and tested: 0-246 A mixture of clay and sand representing beds 1,2, 3, and 4. Utilization: Suitable for face brick or common brick. Wausau (1) Location: Road material clay pit at Wausau, 800 feet west of Wausau Station. Section exposed in pit.: 1.. Sandy clay soil 6 inches

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46 2. Gray clay with some red and brown 4 feet 3. Yell6w sand 8 inches 4. Light gray and pink clay 2 feet 5. Sand 3 feet Samples collected and tested: 0-128 Gray clay, bed 2. 0-129 Gray and pink clay, bed 4 0-251 Mixture of four parts 0-128; two parts 0-129 and four parts sand, bed 5. Utilization: Either clay or the mixture make attractive light-colored, face brick. (2) Location: Roadside gully 2.7 miles west of Wausau on the Vernon road. Section exposed: 1. Soil, coarse orange sand 6 inches 2. Clayey sand, reddish orange 6 feet 3. Micaceous clay, light gray 9 feet 4. Sand ? Samples collected and tested: 0-248 Light gray clay, bed 3. 0-249 Clay and sand representing beds 2 and 3. Utilization: Both have poor plasticity but are probably suitable for common brick. (3) Location: Two miles southwest of Wausau Station on the road to Lynn Haven. Section exposed in roadside ditch about half way up hillside. Section exposed: 1. Soil, sandy clay 6 inches 2. Clay, mostly red 2 feet 6 inches 3. Clayey sand, gray and yellow 3 feet 4. Clay, gray, laminated 3 feet 6 inches 5. Sand, gray and yellow 3+ feet Samples collected and tested: 0-130 Red clay, bed 2. 0-131 Gray clay, bed 4. 0-254 Sand-clay, mixture of beds 2, 3, 4, and 5. Utilization: Not suitable for clay products other than inferior common brick.

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, .-*.. ' " J I, ' .' * .' , ...... (4) Location: Nine-miles northeast of Wausau on road to Chipley in ..roadside ditch on east. side of.hill. Section exposed:' Clay is exposed in ditch for several hundred feet and red sand alternates with red clay with no apparent regularity. Sanmple collected and tested: 0-156 Represents three-foot thickness of red clay with only a few inches of soil overburden. Utilization: Suitable for red common brick. S.

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48 Table 3. Physical and Firing Properties of Florida Clays (J. H. C. Martens analyst) County ALACHUA BAY C ALHOU Samle Number 0-216 0-217 0-218 0-154 06265 0-103 0-104 Physical Properties Plasticity Fair Good Fair Good Poor Excel. Poor Water of plasticity % 68 35 37 46 37 36 25 Linear air shrinkage % 16.6 10.9 6.6 6.4 6.6 8.5 2.0 Modulus of Rupture Cracked 270 160 210 180 290 180 Slaking test Fast Fast Medium Fast Fast Fast Slow Color Grayish Light Red Very Very Light Dark pink pink light light brown gray gray gray Firing behavior Linear shrinkage % Cone 010 (9501C) 4.5 0.5 1.0 1.0 0.0 -0.5 -2.0 Cone 05 (1050"C) Cracked 1.0 1.0 2.5 0.0 0.5 -0.5 Cone 03 (1090"C) Cracked 1.0 2.5 3.5 1.5 2.5 Cone 1 (1150C) -1.0 3.0 5.0 2.0 3.5 Cone 3 (1190"C) Cracked 1.5 5.5 7.5 2.5 3.5 -0.5 Cone 6 (1250"C) -1.5 5.0 7.5 4.0 5.5 Absorotion% by weight Cone 010 1.6 13.5 24.2 27.3 23.2 19.7 18.6 Cone 05 -13.7 21.8 27.1 22.9 20.2 20.2 Cone 03 -13.6 20.0 23.7 21.1 14.1 Cone 1 -13.5 19.6 18.4 18.8 12.8 Cone 3 -11.3 15.1 12.3 16.1 12.2 20.4 Cone 6 -11.7 15.4 10.6 15.7 11.0 Porosity % Cone 010 6.7 33.5 42.3 42.3 40.0 36.9 41.6 Cone 05 -33.6 43.0 43.8 41.0 37.3 40.9 Cone 03 -33.5 40.2 34.8 39.5 32.8 Cone 1 -35.0 38.9 31.7 37.2 30.5 Cone 3 -30.8 32.3 27.4 35.5 29.0 Cone 6 -31.2 34.1 23.3 34.6 28.7 Color Cone 010 Light Pink Light White White Reddish Reddish grayish brick orange orange red red Cone 05 Light Pink Grayish White White Reddish Reddish grayish red orange orange red Cone 03 Light Buff Grayish White White Reddish brown red orange Cone 1 -Buff Grayish White White Reddish red orange Cone 3 Gray Buff Grayish Light White Reddish Brick red cream orange red Cone 6 -Cream Grayish Light White Brick red cream red

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49 N CLAY DUVAL ESCAMBIA 0-105 0-201 .0-229 0-202 0-208 0-2 0-189 0-190 '0-170 0-175 Poor Fair Fair Good Excel. Good Good Good Good Good 28 29 37 32 36 34 29 26 26 33 2.0 7.4 11.6 8.8 9.9 9.8 7.0 7.3 8.2 8.2 30 210 370 370 680. 460 340 440 550 200 Slow Fast Fast Fast Fast Fast Medium Medium Slow Fast Yellow Grayish Grayish Grayish Brown Gray YellowLight Light Light red red yellow ish brown brown brown gray -1.5 1.5 1.0 0.5 1.0 0.0 0.0 0.5 0.0 -1.5 1.5 1.5 1.5 2.5 2.0 1.0 0.5 0.0 -1.0 2.0 2.5 2.5 2.5 2.0: 2.0 1.5 2.5 -1.5 3.0 2.5 2.5 3.0 1.5 2.0 3.0 3.5 -1.0 3.0 2.0 4.0 4.0 2.5 2.0 2.5 3.0 0.0 ' 2.0 3.5 2.0 4.0 3.5 3.0 2.0 3.5 3.5 19.7 16.3 13.0 13.4 12.5 11.3 15.1 14.2 14.3 18.6 20.4 '14.5 13.0 10.9 8.1 6.6 14.1 12.1 11.1 18.0 20.5 '14.2 10.6 10.0 6.0 5.9 12.7 11.0 10.5 12.2 19.1 15.0 9.4 9.5 5.1 5.2 10.5 9.5 8.3 12.3 -14.6 9.4 8.7 3.7 3.4 11.8 9.1 6.8 10.5 20.0 "'14.5 9.3 9.5 4.1 3.8 8.1 7.7 6.3 9.8 41.7 32.6 32.3 32.9 32.9 25.6 32.3 30.4 28.8 34.6 40.9 34.2 32.3 30.5 24.4 16.3 30.8 26.9 27.4 32.4 39.3 35.9 29.3 29.4 21.5 19.7 28.7 27.8 26.8 30.3 -33.4 27.9 '28.4 23.8 18.8 27.7 26.8 24.1 28.1 -33.5 27.3 28.0 16.8 15.0 25.4 25.2 20.9 27.5 40.0 34.1 27.3 29.4 17.7 15.8 24.6 24.7 20.0 26.3 Reddish Light Grayish Reddish Reddish Reddish Reddish Reddish Reddish Reddish orange brick red .orange orange orange orange orange orange orange red Reddish Light Grayish Reddish Reddish Reddish Reddish Reddish Reddish Reddish orange brick red orange orange orange orange orange orange orange red Brick Light Grayish Reddish Brick Brick Light Brick Light Brick red brick red orange red red brick red brick red red red red Brick Brick Grayish Brick Brick Brick Light Brick Brick Brick red red red red red red brick red red red red -Brick Grayish Brick Brick Dark Brick Brick Brick Brick red red red red red red red red red Brick Brick Grayish Brick Dark Dark Brick Brick Brick Brick red red red red red red red red red red

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50 Table 3. continued County ESCAMBIA -continued Samle Number 0-18 0-184 0-185 0-181-0-3 0-176 0-166 Physical Properties Plasticity Good Good Good Good Excel, excel. ixcel. dater of plasticity % 31 28 33 26 28 42 48 Linear air shrinkage % 9.8 9.0 9.0 .7.1 8.4 7.5 9.3 Modulus of Rupture 420 '420 '580 '440 510 "200 '270 Slaking test Medium Medium Fast Medium Medium Fast past Color Light Light YellowBrown Light Yellow Reddish brown brown ish brown ' 'orange gray Firing behavior Linear shrinkage % Cone 010 (950°0) 0.0 0.0 0.5 0.0 0.0 0.0 1.0 Cone 05 (10500C) 2.0 1.0 3.0 0,0 1.5 1.0 4.5 Coine 03 (1090"C) 2.0 2.0 3.5 2.0 2.0 7.0 8.0 Cone 1 (11500C) 3.0 2.0 5.5 3.0 2.5 7.5 9.5 'Cone 3 (1190°C) 3.0 ' 2.5 6.5 2.5 2.5 8.5 10.5 'Cone 6 (1250*C) 4.5 2.0 7.0 2.0 3.5 9.5 10.5 Absorption% by weight Cone 010 12.6 14.4 15.4 14.5 14.1 25.9 23.0 'Cone 05 9.9 11.1 9.9 13.0 * 10.5 21.2 14.5 'Cone 03 8.6 9.7 6.9 11.0 10.9 10.8 5.1 'Cone 1 6.0 5.1 3.6 8.4 7.7 7.1 2.5 'Cone 3 ' 5.3 7.9 0.3 6.6 5.6 5.7 0.4 Cone 6 4.9 ' 6.3 0.2 7.2 5.4 2.7 0.4 Porosity'% Cone 010 26.3 30.4 29.1 29.8 28.9 41,2 39.2 'Cone 05 21.4 ' 27.8 21.5 28.7 24.2 *37.2 * 29.5 'Cone 03' 23.4 ' 26.9 16.5 27.5 22.4 '23.6 ' 13.2 'Cone 1 ' 18.3 23.8 8.0 24.2 20.0 15.9 7.5 'Cone 3 '16.5 '23.4 1.5 23.5 15.8 13.5 2.8 'Cone 6 17.8 21.9 1.3 22.5 16.7 7.0 2.3 Color Cone 010 Reddish Light Buff Reddish Reddish Reddish Light orange brick orange orange orange grayish red orange Cone 05 Reddish Reddish Buff Reddish Reddish Reddish Light orange orange orange orange orange grayish orange Cone 03 Reddish Reddish Buff .Reddish Brick Light Light orange orange orange red brick grayish red orange Cone 1 Reddish Reddish Reddish Brick Brick Brick Grayish orange orange orange red red red orange Cone 3 Brick Brick Dark Brick Brick Brick Brown red red grayish red red red red Cone 6 Brick Brick Dark Brick Brick Brick Gray red red grayish red red red red :

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51 FLAGLER 0-167 0--165 9-23o0 0-186 0-22 0-22 0223 0-226 0-228 0-222 Good Excel. Fair .Fair. Good Good Good Fair Good Good 31 37 26 25 39 30 26 24 29 25 6,0 7.4 6.2 .5.4 11.1 .9.3 6.9 6.4 8.8 6.6 140 .200 , 210 170 380 530 660 380 420 370 Fast Fast Fast Fast Fast Fast. Fast Fast Fast Fast Grayish Light :Light YellowGray. Dark Brown Gray Gray Brown pink grayish grayish gray gray pink orange 0.5 1.0 0.0 0.0 1.0 2.0 0.5 0.5 0.5 0.0 0.5 3.5 0.0 0.0 .1.0 2.0 0.0 -0.5 1.0 0.0 2.5 6.0 0.5 -0.5 2.5 2.0 1.0 0.5 2.0 0.5 1.5 6.5 1.5 0.5 -2.0 .1.0 0.5 15 0.0 1.5 8.0 2.5 1.0 Fugd 1.5 1.0 0.5 1.5 0.0 5.0 9.0 3.0 0.5 gl8 .1,5 .1.0 1.0 2.0 0.5 20.1 20.8 16.7 16.5 16.9 12.0 10.8 10.4 10.6 10.8 17.7 15,6 15.3 15.5 17.0 10.5 10.0 11.1 9,0 11.0 15.0 9.9 13.8 15.9 .7.5 10.0 9.7 10.8 10.0 10.9 14.4 7.2 12.7 15.3 -7.9 10.3 11.4 7.7 10.0 11.8 2.7 10.2 14.8 -8.1 .9.5 10.7 7.9 12.1 9,9 0.8 9.0 14.7 -8.6 10.3 10.9 8.5 8.3 34.3 36.1 33.0 34.7 32.5 30.5 30.3 33.2 29.4 31.8 34.8 30.7 33.1 34.7 33.6 .29.2 30.4 30.7 27.8 32.0 32.4 21.4 31.5 34.3 22.0 25.7 29.5 31.1 25.7 31.5 31.8 17,3 31.2 33.7 -24.2 29.8 31.8 25.5 31.0 28.3 .6.1 26.6 32.5 .24.6 29.6 28.7 26.6 30.7 26.3 3.1 24.6 33.6 -24.9 30.0 31.2 27.0 25.8 Light Light Pink Reddish Reddish Reddish Light Light Reddish Light grayish grayish orange orange orange brick. brick orange brick orange pink red red red Light Light Pink ReddiLth Reddish Reddish Light Light Reddish Light grayish grayish orange orange orange brick brick orange brick orange pink red red red Buff Light Grayish Reddish Yellow Brick Brick Brick Brick Brick grayish pink orange rod red red red red pink Buff Light Grayish Reddish -Brick Brick Brick Brick Brick grayish pink orange red red red red red pink Buff Light Buff Reddish -Brick Brick Brick Brick Brick brown orange red red red red red Buff Gray Buff Light -Brick Brick Brick Brick Brick brick red red red red red red

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52 Table 3. continued County GAD S D EN Sample Number 0-114 0-115 0-153 0-152 0416 0-1170-150 Physical Properties Plasticity Fair Fair Fair Fair Poor Good Poor Water of Plasticity % 32 26 127 27 35 24 54 Linear air shrinkage % .8.6 .7.1 13.8 .9.0 11.2 5.9 14.3 Rodulus of Rupture 270 210 370 460 270 250. 630 Slaking test Slow Slow Medium Fast Fast Fast Fast Color Light Brown Light Brown Grayish YellowLight brown gray yellow ish gray gray Firing behavior Linear Shrinkage % Cone 010. (9500C). 0.5 -1.0 6.0 0.0 0;.0 0'.0 1.0 Cone 05. (1050°C) 0.5 -1.0 18.5 0.0 0.0 0.5 4.0 Cone 03.(1090'C.) 1.5 0.0 19.5 1.0 6'.5 -0;5 5.0 Cone 1.(1150*C) 1.0 0.0 -1.5 -0 -0 Cone 3.(1190'C) 3.0 1.5 14.5 1.0 1.0 0.5 5.5 Cone 6.(1250kC) 2.0 0.5 -1.0 -0.0 Absorption% by weight Cone 010 .17.7 14.2 Cracked 12.0 14.8 13.4 11.1 Cone 05. .17.3 14.3 0.9 12.8 15.6 14.3 7.1 Cone 03. .15.5 14.5 0.9 12.5 14.4 13.7 3.9 Cone 1 15.3 13.1 -11.5 -135 Cone 3. 13.3 14.5 1.2 13.3 14.3 13.6 3.3 Cone 6. 12.8 13.0 -10.3 -14.3 Porosity % Cone 011. 36.7 31.0 32.8 33.0 34.0 27.4 qone 05. 34,8 31.9 5.5 33.5 34.3 34,2 18.7 Qone 03. .33.9 32.5 6.6 32.4 32.5 33;4 14.2 Cone 1 33.2 32.1 -31.6 -33'4 g.ne 3. 30,3 32.3 18.9 33.1 25.3 32;4 14.4 Cone 6. 30.0 31.5 -31.9 -33.0 Color Cone 010 Reddish reddish Buff Brick Orange Buff Buff orange orange red Cone 05 Reddish Reddish Light Reddish Orange Buff Buff orange orange brcwn orange Cone 03 Reddish Reddish YellowBrick Reddish Orange Buff orange orange ish red orange gray Cone 1 Reddish Reddish -Brick -Reddish orange orange " red orange Cone 3 Light Light Dark Dark Brick Light Buff brick brick grayish red red brick red red yellow red Cone 6 Light Light -Dark -Reddish brick brick red orange red ' red

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53 GULF HOLMES .JACKSON 0-140. 0-118 0-120 .0-137 0-138 0-231 0-158 0-197 0-109 0-23.7 Good Good Good Excel. Excel. Good Good Good Good Fair 29 38 32 39 51 28 40 46 40 39 6.0 .7;4 6;8 11.2 14.1 7.0 13.2 9.4 8.7 10.1 290 100 100 1100 820 500 720 290 290 270 Slow Slow Slow Medium Fast Slow Medium Medium Fast Fast Brown Brown Brown Dark Grayish YellowGrayish Brown Gray Brown gray yellow ish yellow gray -0.5 1.0 0.0 1.0 1.5 0.0 0.0 1.5 2.0 1.0 0.5 1.5 0.0 0.5 2.0 0.0 1.0 2.5 2.0 2.0 1.0 2.5 2.0 3.0 3.0 1.0 3.0 4.0 2.0 5.5 2.0 4.5 3.0 --1.0 4.5 7.5 4.9 5.5 1 65 6.5 3.5 3,0 6.0 2.0 5.0 7.0 9.5 7.0 2.5 6.0 3.0 --1.5 6.0 7.5 8.5 6.5 18.0 24.7 19.5 15.0 12.2 14.7 17.3 23.8 21.2 22.6 18.9 23.0 20.7 15.4 10.1 14.0 14.5 19.1 22.6 18.4 16.6 20.3 17.3 10.1 5.0 13.2 10.5 14.9 19.3 13.5 16.2 16.3 15.9 --12.7 7.6 9.8 18.3 11.8 16.1 13.9 15.2 9.5 2.7 11.6 6.0 8.9 7.8 12.1 15.6 14.0 13.1 --12.2 4.9 8.3 10.0 11.4 37.5 43.5 39.4 33.7 28.1 34.6 32.4 41.9 38.7 42.4 38.9 43.1 39.3 34.7 23.6 34.6 30.8 38.2 39.1 38.5 36.8 40.4 37.9 28.2 16.0 33.9 25.8 33.3 37.2 34.3 34.4 36.8 35.9 --32.6 20.5 26.2 35.0 30.8 36.3 33.8 36.1 27,6 9.5 30.9 19.5 25.4 21.2 31.3 35.9 34.3 34.5 --32.0 17.7 24.4 24.3 31.4 Reddish Light Light Reddish Reddish Reddish Brick Reddish White Brick orange brick brick orange orange orange red orange red red red Reddish Light Light Reddish Reddish Reddish Brick Light White Brick orange brick brick orange orange orange red red red red red Light Light Light Reddish Reddish Reddish Brick Light White Brick brick brick brick orange orange orange red red red red red red Light Light Light --Brick Brick Brick White Dark brick brick brick red red red red red red red Brick Brick Brick Brick Light Brick Brick Brick Light Dark red red red red brick red red red cream red red Brick Brick Brick -Brick Dark Brick Light Dark red red red red red red cream red

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54 Tlble 3. continued County JACKSON -continued JEFFLEON ERSON Saple Number 0-121 0-122 0-123 -0-241 0-22 063 0-29 Physical Pronerties Plaaticity Good Good Excel. Good Fair Good Good Water of plasticity % 66 50 58 30 26 31 26 Linear air shrinkage% 17.5 14.8 9.8 6.1 5.4 8.6 8.6 Modulus of Rupture 560 '440 110 140 40 210 280 slakang test Fast Medium Fast Medium Medium Fast Fast Color ited Dark Pink Red Red Brown Brown red Firing behavior Linear shrinkage % *Cone 010 (950*C) 4.0 2.0 .1.5 0.0 0,0 1.0 0.0 *Cone 05 (1050C) 4.5 5.0 2.0 0.0 0.0 2.5 1.5 -one 03 (1090°C) 10.0 .5.0 10.0 2.0 0.5 2.0 1.0 *Cone 1 (1150C) --11.0 4.5 0.5 2.5 1.5 *COne 3 (1190CC) 10.5 .7.0 15.0 4.5 1.0 2.5 0.5 Cone 6 (12500C) -15.5 5.0 3.0 2.5 2.0 Absorptinnby weight Cnne 010 10.0 13.2 32.5 20.3 19.9' 14.9 17.1 Cone 05 10.5 10.0 32.5 19.3 18.7 14.8 13.1. Cnne 03 1.6 6.7 15.8 17.1 17.8 14.1 12.8 Cone 1 --11.0 12.3 17.2 14.4 11.2 Cone 3 2.0 .5.9 .2.4 11.8 14.2 13.6 12.1 Cmne A --0.9 11.3 14.0 13.8 11.8 Pmrosity ?' Cone 010 25.2 31.8 49.0 38.7 37.4 34.8. 33.6 Cone 05 23.6 23.6 49.1 31.3 37.9 35.0 33.4 Cone 03 -9.1 24.8 32.7 36.7 32.0 34.0 33.8 Cnne 1 --26.3 33.9 35.7 34.0 31.7 Cone 3 7.2 20.2 7.0 30.8 32.5 32.5 32.0 Cont 6 --2.3 30.7 33.1 33.3 32.5 Color Cne 010 Red Reddish Pink Pink Pink Reddish Reddish orange orange orange Cone 05 .ied Reddish Pink Pink Pink Reddish Reddish orange orange orange Cone 03 Drown brick Pink Pink Pink Brick Orange red red Cone 1 --Pink Grayish Pink Brick Orange red red Cone 3 Drown Brick ChocoGrayish Grayish Brick Buff red late red red red brown Cone 6 --ChocoGrayish Grayish Brick Buff late red red red brown

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55 LIBERTY NASSAU 0-100 0-101 0-102 -141 0-143 0-142 .0-144 0-145 0-147 0-264 Fair Fair Good Excel, Good Good Good Good Fair Fair 41 26 25 42. 41 33 25 37 38 30 8.9 *4.0 5.1 10.3 7.6 .6.9 8.6 11.2 11.7 7.6 310 220 490 520 180 290 230 390 580 240 Slow Slow V.slow Medium Medium Medium Medium Fast Medium Medium Light Dark Dark Red Light Brown Brown Brown Light Light brown gray gray brown brown brown -0.0 -1.0 0.0 .0.0 1.0 .0.0 0.0 0.5 -0.5 0.0 *0.5 -0.5 0. 0 10 1.0 -0.5 0.0 1.0 0.5 -0.5 *3.0 .0.0 0.3 4.5 4.5 .2.5 1.0 3.5 2.0 1.5 2.5 0.5 -3.5 .4.0 2.0 .2.0 3.0 2.5 1.5 * 4.0 1.5 1.0 6.0 .6.5 2.5 3.5 3.5 2.5 2.5 2.5 1.0 -10.5 8.0 3.5 2.5 3.0 1.5 1.5 21.2 .19.7 17.8 .18.0 25.8 .19.3 17.3 12.3 11.0 15.8 21.1 20.8 17.8 17.3 24.6 20.6 17.7 13.6 12.7 15.3 15.9 19.4 15.5 10.6 16.7 17.1 16.4 10.5 11.0 14.5 17.3 -19.7 -9.9 17.0 16.9 16.7 9.5 10.3 14.8 15.2 -19.5 14.9 9.6 .12.2 15.7 15.0 9.5 9.3 14.0 15.6 20.3 -9.1 12.6 14.4 15.7 9.6 8.6 13.9 40.7 38.1 36.9 36.6. 42.8 .37.0 37.0 31.6 31.0 34.5 40.6 40.6 37.3 35.5 .42.5 .39.0 -33.1 30.2 35.1 36.5 40.0 35.7 29.8 35.3 ,35.6 36.4 29.3 28.4 33.9 37.7 38.4 -27.2 -34.4 .36.8 36.7 28.0 27.6 32.8 '34.6 *38.3 34.5 -27.2 30.4 34.6 35.3 28.9 27.5 33.6 34.5 37.7 -26.9 30.7 33.5 35.9 30.2 26.0 33.4 Reddish Reddish Reddish Light Reddish Reddish Reddish Light Light Reddish orange orange orange brick orange orange orange brick brown orange red red Reddish Reddish Reddish Reddish Reddish Reddish Reddish Light Reddish Reddish orange orange orange orange orange orange orange brick orange orange red Reddish Reddish Brick Brick Reddish Reddish Brick Ligh+. Reddish Reddish orange orange red red orange orange red brick orange orange red Reddish Reddish -Brick Reddish Reddish Brick 3rick Reddish Reddish orange orange red orange orange red red orange orange Brick Brick Brick Brick Reddish Light Brick Brick Red Light red red red red orange brick red red brick red red Brick Brick -Brick Reddish Light Brick Brick Light Light red red red orange brick red red red brick red red

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56 Table 3. continued County NASSAU -continued OKALOOSA P U T Sample Number 0 48 -148 9-4 0-1 0-193 0-232 0-20 0-219 Physical Properties Plasticity Good Good Good Good Fair Good Fair Water of plasticity % 39 32 32 36 35 30 29 Linear air shrinkage % 9.3 9.3 8.6 7.'6 7.3 9.5 8.0 Modulus of rupture 250 610 640 230 210 530 .520 Slaking test Medi.un Medium Fast Medium Fast Fast Fast. Color Brown Brown Brown Brown Brown Brown Grayish yellow Firing behavior Linear shrinkage % Cone 010 (950°C) 0.0 -0.5 0.5 0.0 0.0 0.0 0.0 Cone 05 (1050'C) 1.5 0.5 1.0 2.0 0.'5 0.0 -0.5 Cone 03 (1090°C) 3.5 1.5 2.0 4.0 2.5 1.5 0.5 Cone 1 (1150"C) 3.5 2.0 2.0 4.0 3.0 1.5 0., Cone 3 (11900C) 6.0 1.5 1.5 5.5 3.5 1.5 0.5 Cone 6 (1250°C) 5.0 -0,5 3.0 5.5 3.0 1.5 1.0 Abaerption % by weight Cone 010 20.1 10.4 16.3 23.0 21.7 11.4 11.5 Cone 05 17.1 10.2 11.1 19.5 20.4 10.6 11.8 Cone 03 15.5 8.6 8.6 13.2 16.7 9.2 11.0 Cnnu 1 14.4 9.4 9.2 13.3 14.3 9,4 10,8 Cone 3 10.6 9.7 8.6 11.6 13.8 8.5 11.6 Cone 10.1 9,1 7.9 11.6 14.2 8.4 10.8 Porosity Cone 010 38.6 29.0 38.3 40.6 40.0 28.8 33.0 Cone 05 39.0 29.0 31.1 38.5 41.0 28.6 31.5 Cone 03 34.8 27.3 29.0 30.7 36.6 27.9 31.0 Cone 1 33.8 28.2 29.0 32.0 34.6 26.9 30.8 Cone 3 29.6 29.5 27.6 30.3 33.0 25.7 31.0 Cone 6 29.0 28.4 26.7 29.6 33.4 26.0 30.1 Color Cone 010 Grayish Grayish Reddise Light Light Reddish Brick red reddish orange brick brick orange red orange red red Cone 05 Grnyish Keddish ReddisY Light Light Reddish Brick red orange orange brick brick orange red red red Cone 03 Grayish Brick Brick Brick Brick Light Brick red red red red red brick red red Cone 1 Grayish Brick Brick Brick Brick Light Brick red red red red red brick red red Cone 3 Grayish Dark Brick Brick Brick Brick Brick red red red red red red red Cone 6 Light Dark Dark Brick Brick Brick Brick brown red red red red red red

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57 NAM ST. SANTA ROSA JOHNS 0-221 0-220 -0-210 0-106 ,0-107 0-108 0-173 0-174 0-139 0-160 Fair Good Fair Excel. Excel. Excel. Excel. Excel. Good 'Good 38 32 30 39 36 37 33 34 25 38 10.5 9.0 9.2 8.5 8.3 8.5 6.3 9.1 5.5 7.5 470 470 320 380 360 210 220 420 180 230 Fast Fast Fast Fast Fast Fast Medium Medium Medium Fast Brown YellowBrown Light Gray Yellow Orange Light YelowLight ish cream brown gray gray gray 0.5 1.0 0.0 0.5 2.0 0.5 0.0 0.5 -0.5 0.5 1.0 1.5 1.5 2.5 2.0 0.5 0.5 0.5 -0.5 1.5 2.0 2.5 0.5 6.5 7.5 4.0 4.0 2.5 1.0 3.0 2.0 2.0 0.5 6.5 6.0 4.0 4.5 3.0 0.0 3.5 1.5 .1.5 1.5 9.0 7.0 6.0 4.5 3.0 1.0 5.0 2.5 2.5 0.5 7.5 7.5 7.0 7.5 4.5 1.0 8.0 15.4 10.9 12.0 19.2 15.6 20.8 21.3 16.7 17.6 21.3 13.6 9.4 11.0 16.4 16.3 19.2 20.0 15.5 18.7 19.5 12.2 6.8 9.1 8.6 3.8 12.4 13.6 11.2 17.2 16.3 11.7 7.4 10.4 6.5 7.2 6.5 11.6 10.1 17.0 14.6 11,1 6.9 9.9 0.5 0.9 5.6 10.0 6.7 16.7 12.1 11.3 7.9 10.1 0.0 0.5 6.0 6.0 5.1 15.4 8.9 34.8 28.0 33.0 33.3 33.3 35.9 37.6 31.4 34.6 36.2 33.4 26.1 31.0 30.0 30.3 32.6 37.5 31.0 36.1 36.5 34.0 23.2 31.0 19.4 10.3 26.3 29.0 25.0 35.5 31.1 31.1 24.4 30.0 15.2 16.8 15.2 27.4 24.1 36.0 30.2 31.7 23.8 28.8 1.2 3.4 13.2 24.4 21.2 35.3 26.3 31.3 23.9 29.4 0.0 5.5 15.2 17.3 16.1 33.9 23.4 Light Reddish Light White Buff Salmon Buff Reddish Buff Light brick orange brick orange pinkish red red gray Light Reddish Reddish Cream Buff Salmon Buff Reddish Buff White brick orange orange orange red Light Brick Light Cream Buff Salmon Buff Reddish Buff White brick red brick orange red red Light Brick Brick Cream Buff Salmon Buff Reddish Buff White brick red red orange red Brick Brick Brick Grayish Drab Brick Buff Reddish Buff Cream red red red yellow red orange Brick Brick Dark Grayish Light Brick Buff Buff Buff Cream red red red yellow brown red

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Table 3. continued .. County WALTON Sam e Numer -1 -098 0-27 0-124 0-126 Physical Properties Plasticity Good Fair Poor Fair Good Good Excel. Water of plasticity % 28 37 38 29 39 43 46 Linear air shrinkage % 5.9 10.2 10.6 7.0 9.0 11.6 7.6 Modulus of Rupture 90 320 230 290 320 290 70 Slaking test Fast Medium Fast Medium Fast Slow Fast Color Light Olive Brown Brown Gray Dark Light pinkish red pinkish brown gray Firing behavior Linear shrinkage % Cone 010 (950*C) ' 0.0 1.0 0.5 .0.5 2.0 1.0 2.0 Cone 05 (1050*C) 0.0 0.5 * 1.0 0.0 2.5 1.0 1.0 Cone 03 (1090°C) 0.5 3.5 1.5 0.5 5.0 4.5 3.0 Cone 1 (1150*C) 1.0 3.5 -1.5 .7.5 5.0 4.5 Cone 3 (1190°C) "1.0 4.0 2.5 1.5 .10.5 6.0 .7.0 Cone 6 (12500C) 1.5 --1.5 10.5 10.5 7.5 Absorption% by weight Cone 010 19.0 18.3 -19.7 17.0 -23.0 .19.6 28.2 Cone 05 '19.1 18.5 19.7 17.2 .22.9 .17.6 28.6 Cone 03 18.1 13.2 17.6 -16.4 .16.0 .13.5 26.6 Cone 1 17.0 12.3 -16.0 .12.0 10.8 24.2 Cone 3 16.7 9.5 15.8 14.2 .6.0 10.4 17.0 Cone 6 16.1 --14.7 .5.2 .9.2 .. 13.3 Porosity % Cone 010 35.7 36.0 39.7 35.3 40.7 37.8 .44.8 Cone 05 36.8 36.3 39.7 35.8 40.0 35.9 44.5 Cone 03 35.4 31.8 37.3 35.2 32.1 28.2 43.0 Cone 1 34.6 32.3 -33.8 27.3 27.4 : 40.7 Cone 3 34.0 27.6 35.8 32.0 17.2 26.8 34.0 Cone 6 31.7 --32.5 16.1 25.2 30.0 Color Cone 010 Reddish Reddish Reddish Reddish Cream Reddish Very orange orange orange orange orange. light pink Cone 05 Buff Reddish Reddish Reddish Cream Reddish Very orange orange orange orange light pink Cone 03 Buff Brick Reddish Reddish Cream Reddish Light red orange orange orange pinkish gray Cone 1 Buff Brick -Light Cream Brick Light red brick red pinkish red gray Cone 3 Buff Brick Brick Brick Cream Brick Light red red red red pinkish gray Cone 6 Buff --Brick Cream Brick .Light Sred red pinkish J---.. ... ... .gray

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59 WASHINGTON 0-246 0-128 0-129 0-251 0-248 0-249 0-130 0-131 0-254 0-156 Good Excel. Excel. Good Poor Poor Good Fair Poor Fair 36 48 56 35 35 28 38 61 36 40 9.3 7.9 9.8 6.6 11.1 8.6 9.8 18.2 9.8 10.7 280 140 170 130 320 240 220 650 200 440 Kedium Fast Fast Medium Fast Fast Medium Fast Fast Fast Orange Light Light Light YellowLight Brown Grayish Orange Red pinkish grayish grayish ish brown yellow gray pink pink gray 0.0 2.5 2.5 0.0 0.0 0.0 0.5 3.0 0.0 0.5 1.5 3.5 1.0 -0.5 0.0 1.0 3.5 -1.0 3.5 5.0 5.0 2.0 1.5 1.5 3.5 5.5 1.0 2.0 4.0 6. 6.5 -1.5 2.0 4.0 -1.5 3.5 4.5 11.0 8.5 5.5 2.5 2.0 4.5 6.0 1.5 4.5 5.0 11.5 12.0 -2.5 2.0 4.5 -1.5 3.5 17.1 26.9 25.0 22.2 13.5 15.7 19.0 8.5 17.1 17.0 19.8 26.6 26.6 -12.8 17.2 21.0 10.9 -16.2 15.0 19.3 17.2 20.8 12.4 13.4 13.8 5.1 15.9 13.6 12.4 16.5 13.8 -12.6 12.8 15.6 -15.6 11.9 9.1 7.9 10.0 11.5 10.9 12.1 13.8 3.5 15.1 10.5 11.1 4.9 3.8 -9.7 12.2 12.6 -13.7 9.7 39.6 43.5 42.1 40.0 31.1 34.8 38.4 22.3 35.9 35.0 38.5 41.6 43.0 -29.6 33.5 41.0 22.9 -34.4 35.8 36.2 34.5 39.3 29.0 30.7 33.9 17.7 35.5 32.1 31.2 33.4 29.6 -26.0 31.0 34.0 -32.8 29.1 28.3 19.8 23.3 30.0 27.2 29.5 32.9 12.9 31.3 28.1 30.3 15.5 13.0 -26.8 30.6 31.9 -32.7 27.2 Reddish Light Light Light Reddish Reddish Reddish Reddish Reddish Brick orange pinkish pink pink orange orange orange orange orange red gray Reddish Light Light -Reddish Reddish Reddish Reddish -Reddish orange pinkish pink orange orange orange orange orange gray Light Light Light Light Light Light Light Light Brick Brick brick pinkish pink pink brick brick brick brick red red red gray red red red red Brick Light Light -Brick Brick Light -Brick Brick red pinkish pink red red brick red red gray red Brick Light Light Buff Brick Brick Brick Brick Brick Dark red pinkish pink red red red red red red gray Brick Light Light -Brick Dark Brick -Brick Dark red pinkish pinkish red red red red red gray gray

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-FLORIDA-GEOLOGICAL-SURVEY COPYRIGHT NOTICE © [year of publication as printed] Florida Geological Survey [source text] The Florida Geological Survey holds all rights to the source text of this electronic resource on behalf of the State of Florida. The Florida Geological Survey shall be considered the copyright holder for the text of this publication. Under the Statutes of the State of Florida (FS 257.05; 257.105, and 377.075), the Florida Geologic Survey (Tallahassee, FL), publisher of the Florida Geologic Survey, as a division of state government, makes its documents public (i.e., published) and extends to the state's official agencies and libraries, including the University of Florida's Smathers Libraries, rights of reproduction. The Florida Geological Survey has made its publications available to the University of Florida, on behalf of the State University System of Florida, for the purpose of digitization and Internet distribution. The Florida Geological Survey reserves all rights to its publications. All uses, excluding those made under "fair use" provisions of U.S. copyright legislation (U.S. Code, Title 17, Section 107), are restricted. Contact the Florida Geological Survey for additional information and permissions.


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