Ụwa Diatomaceous bụ ụdị nkume sedimentary sedimentary biogenic siliceous, nke kachasị nke ihe fọdụrụ diatom oge ochie mejupụtara.Ngwakọta kemịkalụ ya bụ SiO2, nwere obere ego Al₂O₃, Fe₂O₃, CaO, MgO, K₂O, Na₂O, P₂O₅na organic okwu.Isi ojiji nke diatomite bụ ihe nzacha, ihe nzacha, adsorbents, ndị na-ebu catalytic, ihe eji ewu gburugburu ebe obibi na ihe ndị ọzọ.