A PRELIMINARY REPORT ON CLAYS OE FLORIDA 191 
Flood-plain clays are exposed on the bank of the Econlockhatchee 
River, seven and one-half miles east of Winter Park, on the property 
of P. A. J. Nelson. A section of this exposure is as follows: 
Section of Clay Strata on Econlockhatchee River on Nelson Property, 
East of IVinter Park. Feet. 
Sand, surface . 3 
Clay, brown, plastic. 2 
Clay, brown, sandy . 3 
Clay, gray, jointed . 1 
Sand .... ? 
This deposit is located about two miles from the Florida East Coast 
Railway. The heavy overburden and the thickness of the clay does not 
warrant commercial exploitation. 
Numerous lacustrine deposits are found in Orange County. One 
of these, suitable for common brick, is exposed on the west side of Lake 
Ola, but its distance from transportation renders it of doubtful com¬ 
mercial importance. 
A sample from city pit in the city of Orlando was tested by the 
United States Bureau of Standards in 1914 with the following results i 1 
Physical Properties of Orlando City Clay (Bureau of Standards Sample No. 14.). 
Plasticity... 
..... Poor. 
Water of plasticity. 
19.9 % 
Linear air shrinkage. 
. 2.55% 
Fire tests: 
Temperature. Linear Shr. 
Porosity. 
Color. 
Per Cent. 
Per Cent. 
950°C. 0.56 
36.1 
Red. 
1020 
36.4 
Red. 
1050 
34.6L 
Red. 
1080 
35.2 
Red. 
1100 
35.3 
Red. 
1110 0.41 
Red. 
1140 
35.2 
Red. 
1170 
35.8 
Red. 
1200 
35.6 
Red. 
1230 0.58 
35.3 
Red. 
1260 
36.4 
Red. 
1290 
36.0 
Red. 
1320 0.56 
35.2 
Red. 
This clay is of no value for the manufacture of clay products. 
OSCEOLA COUNTY 
Osceola County lies in the southeastern edge of the Lake Region 
and is underlain by Pleistocene sands and marls. A few clays are in- 
1 Sellards, E. H., Report on Tests for Paving Brick, Florida Geological Survey 
Press Bulletin No. 7,1915. 
