Sampling and Analysis of Kga-1B Well-Crystallized Kaolin Source Clay

Robert J. Pruett1 and Harold L. Webb2
1 ECC International, Technology Center, P.O. Box 471, Sandersville, Georgia 31082
2 ECC International, Deepstep Operations, P.O. Box 617, Sandersville, Georgia 31082

Abstract: Additional well-crystallized kaolin from Washington County, Georgia, has been supplied to the Clay Minerals Society Source Clay Repository to replace the exhausted supply of KGa-1. This kaolin is called KGa-1B and is from a geographic location and stratigraphic position close to where KGa-1 was collected. Slight mineralogical and chemical differences are observed between KGa-1 and KGa-1B. KGa-1B crude appears slightly better crystalline than KGa-1, and it has a slightly higher titania content than KGa-1. The Al2O3, SiO2, Fe2O3, alkali, and alkaline earth contents appear similar for both samples. KGa-1 has a slightly coarser particle size than KGa-1B crude. More intensive post-depositional alteration may have cleansed and crystallized the KGa-1B material to a slightly greater degree than the KGa-1 material.

Key Words: Georgia • Kaolin • Kaolinite • Source clay • Well crystallized

Clays and Clay Minerals; August 1993 v. 41; no. 4; p. 514-519; DOI: 10.1346/CCMN.1993.0410411
© 1993, The Clay Minerals Society
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