Florida Geological Survey -
Geologic Topics
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Identification:
Fullers Earth is the name applied to certain clays that have
the ability to adsorb coloring matter from vegetable,
mineral and animal oils. Some of the Fullers Earth
clays are not readily distinguishable from common clay, but
in general the fullers earth found in Florida is light green
to gray in color, has a greasy feel when wet, and has a low
specific gravity. Fullers earth will not slake or
disintegrate readily when placed in water, as will
Kaolin.
Occurrence: Sizable deposits of fullers earth are known to occur
in Gadsden County. Small deposits of clay similar to
Fullers Earth are known in many other
counties, and are often encountered in the drilling of
wells.
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