Diatomaceous pasi imhando yebiogenic siliceous sedimentary rock, inonyanya kuumbwa neyekare diatom inosara.Mushonga wayo wemakemikari unonyanya SiO2, ine zvishoma zveAl₂O₃, Fe₂O₃, CaO, MgO, K₂O, Na₂O, P₂O₅uye organic matter.Kunyanya kushandiswa kwe diatomite mafirita aids, mafirita, adsorbents, catalytic vatakuri, zvakatipoteredza zvine hushamwari zvekuvaka uye zvichingodaro.