Gypsum, widespread sulfate mineral of excellent business great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-designed crystals the mineral usually has become identified as selenite. The fibrous huge selection provides a silky lustre and known as satin spar; it really is translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050