Gypsum, widespread sulfate mineral of wonderful business importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In very well-created crystals the mineral commonly has actually been known as selenite. The fibrous significant selection contains a silky lustre and is termed satin spar; it can be translucent and opalescent and is particularly https://www.propanraya.com/id/produk/eco-gypsum-ee-4050