Diatomaceous Earth ke mofuta oa lefika la biogenic siliceous sedimentary, haholo-holo le entsoeng ka mesaletsa ea khale ea diatom.Sebopeho sa eona sa lik'hemik'hale ke haholo-holo SiO2, e nang le palo e nyenyane ea Al₂O₃, Fe₂O₃, CaO, MgO, K₂O, Na₂O, P₂O₅le lintho tse phelang.Tšebeliso e ka sehloohong ea diatomite ke li-filters, li-filler, li-adsorbents, li-catalytic carriers, thepa ea mohaho e nang le botsoalle le tse ling.