bentonite contains of 60-80% montmorillonite. it provides special properties such as swelling and adsorption.

Bentonite is used in drilling fluids to lubricate and cool the cutting tools, to remove cuttings, and to help prevent blowouts.

it is also uses as a food additive as well as in cosmetics and pharmaceuticals as an additive in ceramics, in foundries, for paper and detergents and also as a surface coating in nanotechnology for varnish and paint.