Gypsum, widespread sulfate mineral of excellent professional importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-made crystals the mineral frequently has actually been known as selenite. The fibrous huge range contains a silky lustre and is known as satin spar; it is actually translucent and opalescent and is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050