I-Diatomaceous earth luhlobo lwelitye le-siliceous sedimentary eliyi-biogenic, eliqulunqwe kakhulu zintsalela ze-diatom zakudala. Ulwakhiwo lwalo lweekhemikhali ikakhulu yi-SiO2, equlathe inani elincinci le-Al2O3, i-Fe2O3, i-CaO, i-MgO, i-K2O, i-Na2O, i-P2O5 kunye nezinto eziphilayo. Eyona ndlela isetyenziswa kakhulu yi-diatomite zizixhobo zokucoca, izizalisi, ii-adsorbents, ii-catalytic carriers, izixhobo zokwakha ezinobuhlobo nokusingqongileyo njl.