Kaolinite

My only “sand” sample of kaolinite, shown in the title box above, is gray.  It is from a kaolin quarry in Gordon, Georgia and came to me courtesy of a mail trade with the Georgia Mineralogy Society.  The kaolinite in central Georgia is Late Cretaceous in age (~70 million years old) and is sedimentary in origin, derived from the weathering of igneous rocks.  This region across Georgia may be better known to fossil collectors seeking terrestrial mammal bones and teeth from the overlying Eocene Formations (Rhinehart, et. al. 2019).

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