Bentonite ivhu rinonyura realuminium phyllosilicate rinosanganisira zvakanyanya montmorillonite. Mhando dzakasiyana-siyana dze bentonite dzinodanwa zita rechimwe chinhu chikuru, se potassium (K), sodium (Na), calcium (Ca), uye aluminium (Al). Kambani yedu inonyanya kupa yakasikwa sodium bentonite.