Kaolinite Professor Joseph Davidovits says kaolin clay is one of the most important ingredients in geopolymer. Kaolinite is a clay mineral, part of the group of industrial minerals, with the chemical composition Al2Si2O5(OH)4. It is a layered silicate mineral. Rocks that are rich in kaolinite are known as china clay, white clay, or kaolin. It is a soft, earthy, usually white mineral (dioctahedral phyllosilicate clay), produced by the chemical weathering of aluminium silicate minerals (...)

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