Kaolin (china clay) is a hydrated aluminum silicate crystalline mineral (kaolinite) formed over many millions of years by the hydrothermal decomposition of granite rocks. Hydrous kaolin is characterized by its fine particle size, plate like or lamellar particle shape and chemical inertness.
Clay is used in various industries like rubber, paper, ceramic, glass, paint , plastic and others. Each industry requires different grades of clay in terms of size and content of different minerals. Paper quoting is the highest value chain and possibly ceramic is more generic.
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