Хээр жоншны бохирдлыг арилгах үндсэн мэдлэг, арга …
01summarize Feldspar is one of the most common minerals in the continental crust. Its main components include SiO2, Al2O3, K2O, Na2O and so on. It contains potassium, sodium, calcium and a small amount of barium and other alkali metals or alkaline earth metals. As strategic non-metallic mineral r...