Ụwa Diatomaceous bụ ụdị nkume sedimentary sedimentary biogenic siliceous, nke kachasị nke ihe fọdụrụ diatom oge ochie mejupụtara.Ngwakọta kemịkalụ ya bụ SiO2, nke nwere obere ego nke Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 na ihe organic.Isi ojiji nke diatomite bụ ihe nzacha, ihe nzacha, adsorbents, ndị na-ebu catalytic, ihe eji ewu gburugburu ebe obibi na ihe ndị ọzọ.