Diatomaceous ƙasa wani nau'in dutsen siliki ne wanda aka fi rarrabawa a ƙasashe irin su China, Amurka, Japan, Denmark, Faransa, Romania, da sauransu. Dutsen siliceous sedimentary ne na biogenic, galibi ya ƙunshi ragowar tsoffin diatoms.Ya ƙunshi ƙaramin adadin Al2O3, Fe2O3, CaO, MgO,...
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