Bentonite ke mofuta oa metsi a nang le ore ea letsopa haholo-holo e entsoeng ka montmorillonite, ka lebaka la thepa ea eona e khethehileng.Tse kang: ho ruruha, ho kopanngoa, adsorption, catalysis, thixotropy, ho emisoa, phapanyetsano ea cation, joalo-joalo.
PH boleng 8.9-10