192 
FLORIDA GEOLOGICAL SURVEY-I5TH ANNUAL REPORT 
terbedded with the marls. Few of these, however, have sufficient thick¬ 
ness and extent to warrant commercial exploitation. 
A brick plant was formerly operated near the Fair Grounds at 
Kissimmee. The clay is suitable for only a poor grade of common build¬ 
ing-brick. The deposit is located on the Atlantic Coast Line Railroad. 
Its physical properties are: 
Physical Properties of Kissimmee Fair Grounds Clay (Lab. No. 0-63). 
Plasticity, judged by feel... 
Water of plasticity. 
Pore water. 
Shrinkage water . 
Linear air shrinkage. 
Volume air shrinkage. 
Modulus of rupture, average 
Slaking test. 
Good. 
24.45 % 
0.30% 
20.15% 
4.70% 
15.75% 
271.5 pounds per square inch. 
1 hour. 
Fire tests: 
Temperature. 
Linear Shr. 
Per Cent. 
A bsorption. 
Per Cent. 
Porosity. 
Per Cent. 
Color. 
950°C. 
0.7 
17.57 
38.80 
Brick red. 
1050 
0.3 
18.61 
40.10 
Brick red. 
1150 
1.7 
11.92 
33.80 
Brick red. 
1190 
2.3 
10.09 
30.20 
Brick red. 
1230 
8.94 
25.75 
Brick red. 
PALM BEACH COUNTY 
Palm Beach County is located between Lake Okeechobee and the 
Atlantic Ocean. Its formations are Pleistocene limestones and sands. 
No clays of importance are known to be present. 
PASCO COUNTY 
Pasco County is located on the west side of the central portion of 
the peninsula. The Tampa and Ocala formations compose the surface 
materials with a very coarse sand-clay of unknown age forming a 
mantle of variable thickness over much of the county. 
The coarse, sandy clay is reddish to brownish in color and at times 
has relatively high clay content. It has a thickness of as much as thirty 
feet or more in the region southwest of Dade City and near San An¬ 
tonio. Some of this material is now being used for molding sand. It is 
also extensively used in the county for sand-clay road material. It has 
no value for the manufacture of clay products. 
