A PRELIMINARY REPORT ON CLAYS OE FLORIDA 
207 
Fire tests: 
T emperature. 
Linear Shr. 
Per Cent. 
Absorption. 
Per Cent. 
Porosity. 
Per Cent. 
Color. 
950°C. 
0.8 
14.79 
33.20 
Reddish brown. 
1050 
0.8 
14.80 
33.60 
Reddish brown. 
1150 
0.8 
14.37 
33.10 
Reddish brown. 
1190 
0.8 
14.53 
32.00 
Reddish brown. 
1230 
0.8 
14.95 
21.50 
Reddish brown. 
SUWANNEE COUNTY 
Suwannee County is located in north Florida and is underlain by 
the Ocala, Chattahoochee and Alum Bluff formations. A sand-clay 
mantle covers most of the county and may be used for road material. 
Residual clays from both the Ocala and the Chattahoochee lime¬ 
stones occur locally, but none of these are desirable for use in burned 
products. 
Sandy clays occur commonly in the central and eastern parts of 
the county. Some of these may be used for a poor grade of common 
brick. A red-mottled clay, occurring one mile north of Live Oak on the 
property of W. H. Lyle, was tested by the Bureau of Standards in 
1914, 1 and has the following physical properties : 
Physical Properties of W. H. Lyle Clay (Bureau of Standards, Sample No. 6). 
Plasticity. Good. 
Water of plasticity... 40.5% 
Linear air shrinkage. 11.79% 
Fire tests: 
Temperature. 
Linear Shr. 
Porosity. 
Color. 
Per Cent. 
Per Cent. 
950°C. 
2.39 
33.27 
Light red. 
1010 
31.45 
Light red. 
1040 
29.00 
Light red. 
1070 
24.70 
Light red. 
1100 
5.68 
24.37 
Dark red. 
1130 
24.65 
Dark red. 
1160 
23.85 
Dark red. 
1190 
24.70 
Dark red. 
1220 
5.89 
24.67 
Dark red. 
1250 
24.53 
Dark red. 
1280 
23.96 
Dark red. 
1310 
5.62 
24.65 
Dark red. 
TAYLOR COUNTY 
Taylor County lies in north Florida and borders on the Gulf of 
Mexico. It is underlain chiefly by the Chattahoochee formation. Some 
1 Sellards, E. H., Report on Tests for Paving Brick, Florida Geol. Survey Press 
Bulletin No. 7, 1915. 
