Diatomaceous lapansi ndi mtundu wa miyala ya siliceous yomwe imagawidwa m'maiko monga China, United States, Japan, Denmark, France, Romania, etc. Ndi thanthwe la biogenic siliceous Sedimentary, makamaka lopangidwa ndi zotsalira za diatoms zakale.Muli pang'ono Al2O3, Fe2O3, CaO, MgO,...
Werengani zambiri