I-Diatomaceous earth uhlobo lwedwala eliyi-sedimentary eliyi-biogenic siliceous sedimentary, eliqukethe kakhulu izinsalela ze-diatom zasendulo. Ukwakheka kwamakhemikhali alo ikakhulukazi yi-SiO2, equkethe inani elincane le-Al2O3, i-Fe2O3, i-CaO, i-MgO, i-K2O, i-Na2O, i-P2O5 kanye nezinto eziphilayo. Ukusetshenziswa okuyinhloko kwe-diatomite yizinsiza zokuhlunga, izigcwalisi, ama-adsorbents, abathwali be-catalytic, izinto zokwakha ezinobungani nemvelo nokunye.