Ko te Bentonite, e mōhiotia ana ko te uku bentonite, ko te uku montmorillonite rānei, he kohuke uku tūturu e hangaia ana i te nuinga o te wā mai i te montmorillonite. He rongonui mō tōna mimiti wai tino pai, ōna āhuatanga pupuhi, me tōna kaha whakawhiti cationic. Ko te ingoa "Bentonite" i ahu mai i te rohe o Benton o Wyoming, USA, te wāhi i kitea tuatahitia ai tēnei kohuke uku ahurei, ā, i tapaina hei whakahonore i te wāhi i kitea ai.

Ko te āhuatanga o te bentonite he kaha ki te hanga i ngā kirikiri ina whakamakukuhia, ā, he mea tino nui tēnei i roto i ngā momo ahumahi. Nā ōna āhuatanga ā-tinana me ā-matū ka taea te whakamahi hei wāhanga matua i roto i ngā paru keri, hei whakarei ake i tōna matotoru, te whakatārewatanga, me te hinu. I roto i te ahumahi pepa, ka mahi te bentonite hei whakakī me te paninga, hei whakapai ake i te mā o te pepa, te maeneene, me te āheinga ki te tā. Hei tāpiri, ka kitea ngā tono i roto i te mahi whakarewa, te uku, te whakapaipai, me ētahi atu, ina hiahiatia pea i roto i ngā āhua rerekē me ngā whakaritenga mahi motuhake.

Ka rerekē te tae o te bentonite mai i te mā me te kōwhai mārama ki ngā atarangi rerekē tae atu ki te hina, te kakariki, te māwhero, te parauri, me te whero, i runga i te nui o te rino. He maha ngā wā ka kitea he kanapa ware pi, he oneone, he hinuhinu rānei, ā, ka kitea i roto i ngā āhua whānui me ngā āhua kiato. Ko te kaha o te bentonite ki te mimiti ka pāngia nuitia e te rahi o te matūriki, ā, ko ngā matūriki angiangi e whakaatu ana i te mimiti kaha ake.