
【Уул уурхайн мэдээлэл】Аж үйлдвэрийн үйлдвэрлэлийн "тулгуур" нь хээрийн жонш
Feldspar is an aluminosilicate mineral of alkali metals and alkaline earth metals such as potassium, sodium and calcium. It has a huge family and is the most common rock-forming mineral. It occurs widely in various magmatic rocks and metamorphic rocks, accounting for About 50% of the total crus...