Kaolinite
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Kaolinite ( KAY-ə-lə-nyte, -lih-; also called kaolin) is a clay mineral, with the chemical composition Al2Si2O5(OH)4. It is a layered silicate mineral, with one tetrahedral sheet of silica (SiO4) linked through oxygen atoms to one octahedral sheet of alumina (AlO6).
Kaolinite
Kaolinite structure, showing the interlayer hydrogen bonds
Kaolin mine in Czech Republic
A kaolin processing plant
Clay mineral
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Clay minerals are hydrous aluminium phyllosilicates (e.g. kaolin, Al2Si2O5(OH)4), sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces.
Oxford Clay (Jurassic) exposed near Weymouth, England
Hexagonal sheets of the clay mineral kaolinite (SEM image, 1,340× magnification)
Structure of clay mineral groups