Gypsum, widespread sulfate mineral of excellent commercial worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-created crystals the mineral commonly continues to be referred to as selenite. The fibrous massive selection includes a silky lustre and known as satin spar; it really is translucent and opalescent and is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050