Diatomaceous Earth ndi mtundu wa mwala wa biogenic siliceous sedimentary, wopangidwa makamaka ndi mabwinja akale a diatom.Mankhwala ake makamaka SiO2, okhala ndi pang'ono Al₂O₃, Fe₂O₃, CaO, MgO, K₂O, Na₂O, P₂O₅ndi organic kanthu.Zomwe zimagwiritsidwa ntchito kwambiri ndi diatomite ndi zothandizira zosefera, zodzaza, zotsatsa, zonyamula catalytic, zida zomangira zachilengedwe ndi zina zotero.