Kaolinite Wikipedia
Kaolinite (/ ˈ k eɪ ə l ɪ n aɪ t /) is a clay mineral, part of the group of industrial minerals with the chemical composition Al 2 Si 2 O 5 4. It is a layered silicate mineral, with one tetredral sheet of silica (SiO 4) linked through oxygen atoms to one octedral sheet of alumina (AlO 6) octedra.