A PRELIMINARY REPORT ON CLAYS OF FLORIDA 219

 There are isolated occurrences of the sedimentary kaolin lying thirty or more miles from any other known deposits.

 DESCRIPTION
 The deposits themselves consist of a bed of white clay-bearing sand, which appears gray in its crude form, ranging from six to more than thirty feet in thickness and overlain by a deposit of loose surfacesand or soil which varies from six to twenty feet in thickness. Often where it has been exposed to weathering, the upper foot or so of the clay is stained with iron oxide. The deposit is very frequently crossbedded, but as the stratification and laminations are of the same material and color, the cross-bedding is often indistinct. Some of these layers are conglomeratic and others have a much higher proportion of clay substance than the average.
 The clay-bearing sand is underlain at different times by various materials, such as green clay, limestone, flint, fuller's earth, marl, or red-streaked clay. In some localities fuller's earth is reported to lie immediately underneath the green clay.






















 Fic. 38-Removing overburden. Edgar Plastic Kaolin Company, Putnam County. Photo by H. Ries.