Diatomaceous ụwa bụ ụdị siliceous nkume tumadi kesara na mba ndị dị ka China, United States, Japan, Denmark, France, Romania, wdg Ọ bụ a biogenic siliceous Sedimentary nkume, tumadi esịnede foduru nke oge ochie diatoms.Nwere obere ego nke Al2O3, Fe2O3, CaO, MgO,...
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