... manufacturer 3.Short delivery time 4.high quailty,competitive price of feldspar 1.Introduction:Feldspar, the potassium, sodium, calcium, ... are a common rock-forming minerals, which 60% Fu existence of magma, 30% distribution in the metamorphic rocks, 10% in ... , but only in a considerable enrichment of feldspar possible as industrial minerals. Feldspar group of four categories: Potash feldspar, albite, ...