Dhulka Diatomaceous waa nooc ka mid ah dhagaxa sedimentary siliceous biogenic, inta badan ka kooban hadhaaga diatom qadiimiga ah.Halabuurka kiimikaad inta badan waa SiO2, oo ka kooban qadar yar oo Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 iyo walxo dabiici ah.Isticmaalka ugu muhiimsan ee diatomite waa qalabka shaandhada, buuxinta, adsorbents, sideyaasha catalytic, qalabka dhismaha ee deegaanka u fiican iyo wixii la mid ah.