Bentonite ke diminerale e seng ea tšepe e nang le montmorillonite e le karolo e ka sehloohong ea liminerale.Sebopeho sa montmorillonite ke sebopeho sa kristale sa 2: 1 se entsoeng ka li-tetrahedron tse peli tsa silicon oksijene le lera la aluminium octahedron ea oksijene.Ho na le li-cations tse ling, tse kang Cu, Mg, Na, K, mohahong o entsoeng ka lera o entsoeng ke lisele tsa kristale tsa montmorillonite, 'me tšebelisano pakeng tsa li-cations tsena le lisele tsa kristale tsa montmorillonite ha e tsitsa haholo, e leng bonolo ho fapanyetsanoa ke li-cations tse ling. thepa e ntle ea phapanyetsano ea ion.Linaha tsa linaheng tse ling li 'nile tsa sebelisoa mafapheng a fetang 100 masimong a 24 a tlhahiso ea indasteri le ea temo, e nang le lihlahisoa tse fetang 300, kahoo batho ba e bitsa "mobu oa bokahohle".

Bentonite e na le lihlopha tse ngata tse kang:Letsopa le sebetsang, Mobu o soeufalitsoeng oa tlhaho, Organic bentonite, Bentonite ore, Calcium bentonite le sodium bentonite.