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 chelete e nyenyane ea Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 le 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.