218 FLORIDA GEOLOGICAL SURVEY-15T11 ANNUAL REPORT


















 Fic. 37.-General View of Edgar Plastic Kaolin Company's Plant, Edgar, Putnam County.

sedimentary kaolin. This location is even west of the area mentioned by Sellards. Here the sand and mica content seems to be higher and the average size of the quartz pebbles larger than in the peninsula deposits. None of this material was washed and no chemical analyses are available to determine if it is actually a sedimentary kaolin.
 Ries' has pointed out that in the northern extension of the sedimentary kaolin region the quartz pebbles are larger than is the case farther south. This would be natural to expect if the original source of the material is northward.
 This may also account for the higher sand and mica content of the material in Walton County, if it is the same substance. In any case, its genesis and occurrence is much the same.
 The deposits of sedimentary kaolin are of irregular outline and extent, rarely covering more than thirty acres. These individual deposits are often grouped together and separated only by a partition ranging from sixty to one hundred feet in width and composed of yellow, sandy clay, loose sand or hardpan probably indicating former stream-channels now filled with surface-sands and sandy clays.

 1Ries, H., Clays of the United States East of the Mississippi River, U. S. Geol. Survey Prof. Paper No. 11, p. 82, 1903.