kaolinite

A mineral, Al₂Si₂O₅(OH)₄, that is the principal constituent of kaolin.

Kaolin in its crystalline form.

A common hydrous aluminosilicate mineral found in sediments, soils and sedimentary rocks, Al2Si2O5(OH)4; one of the kaolin group of minerals.

a mineral consisting of aluminum silicate; main source of kaolin