Bentonite bụ mineral na-abụghị nke ọla, nke montmorillonite bụ isi ihe mejupụtara mineral. Ọdịdị montmorillonite bụ kristal ụdị 2: 1 nke mejupụtara tetrahedrons silicon oxygen abụọ ejiri oyi akwa aluminum oxide octahedron mee. N'ihi na nhazi oyi akwa nke montmorillonite cell kpụrụ nwere ụfọdụ cations, dị ka Cu, Mg, Na, K, wdg., ọrụ nke cations ndị a na montmorillonite cell adịghị agbanwe agbanwe, ọ dị mfe ịgbanwe site na cations ndị ọzọ, ọ nwere ikike mgbanwe ion dị mma. Ná mba ọzọ, etinyere ya n'ihe karịrị ngalaba 100 na ngalaba mmepụta ụlọ ọrụ mmepụta ihe na ugbo 24, yana ihe karịrị ngwaahịa 300, ya mere ndị mmadụ na-akpọ ya "ala zuru ụwa ọnụ".

A makwaara Bentonite dị ka bentonite, bentonite, ma ọ bụ bentonite. China nwere akụkọ ntolite ogologo oge nke imepụta na iji bentonite, nke e ji naanị ihe e ji asa ákwà mee. E nwere ebe a na-egwupụta ihe n'ime olulu mmiri na mpaghara Renshou nke Sichuan ọtụtụ narị afọ gara aga, ndị obodo na-akpọkwa bentonite dị ka ntụ ụrọ. A na-eji ya eme ihe nke ukwuu mana ọ nwere naanị ihe karịrị otu narị afọ. Nchọpụta mbụ na United States dị na Wyoming oge ochie. Ụrọ chartreuse nwere ike ịgbasa ka ọ bụrụ mado mgbe etinyere mmiri. Mgbe e mesịrị, ndị mmadụ kpọrọ ụrọ niile nwere ihe onwunwe a bentonite. N'ezie, ihe mejupụtara mineral bụ isi nke bentonite bụ montmorillonite, nke nwere ọdịnaya nke 85-90%. Montmorillonite na-ekpebikwa ụfọdụ ihe onwunwe nke bentonite. Montmorillonite nwere ike ịdị n'agba dị iche iche, dị ka akwụkwọ ndụ akwụkwọ ndụ odo odo, ọcha odo odo, isi awọ, ọcha, wdg. Ọ nwere ike ịmepụta blọk dị oke ma ọ bụ ala rụrụ arụ, na-enwe mmetụta na-amị amị mgbe ejiri mkpịsị aka tee ya. Mgbe etinyere mmiri, olu nke obere blọk na-agbasa ugboro ugboro ruo ugboro 20-30, na-apụta n'ọnọdụ kwụsiri ike n'ime mmiri, yana n'ọnọdụ mado mgbe mmiri dị ntakịrị. Ọdịdị nke montmorillonite metụtara ihe mejupụtara kemịkalụ ya na nhazi dị n'ime ya.