Clay mineral
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Clay minerals are hydrous aluminium phyllosilicates, 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
Structure of clay mineral groups
Kaolinite
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Kaolinite is a clay mineral, with the chemical composition Al2Si2O54. It is a layered silicate mineral, with one "tetrahedral" sheet of silicate tetrahedra linked to one "octahedral" sheet of aluminat
Clay mineral
…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…
Kaolinite from Twiggs County in Georgia in USA
Kaolinite structure, showing the interlayer hydrogen bonds
Kaolin mine in Czech Republic
A kaolin processing plant