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Abstract
Five samples of clays from Kamthana, Shekapur, Pachgaon, Srirangpur and Chintriyal were fractionated' by gravitational sedimentation and centrifugation methods to concentrate the clay mineral components, and the various fractions obtained were subjected to DTA. Shekapur clay containing large quantities of impurities could be improved considerably by fractionation. The fraction below 2 microns (over 40% of the clay) is mainly kaolinite, free from non-clay minerals and bums white. Most of the quartz present (over 20%) was separated and, the presence of illite was detected only in finer fractions of Pachgaon and Chintriyal clays. Kamthana and Srirangpur clays showed little improvement.