Gypsum, widespread sulfate mineral of excellent industrial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-made crystals the mineral frequently has actually been referred to as selenite. The fibrous massive range features a silky lustre and known as satin spar; it is actually translucent and opalescent which is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050