Gypsum, widespread sulfate mineral of fantastic business value, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-produced crystals the mineral normally has become referred to as selenite. The fibrous massive selection incorporates a silky lustre and known as satin spar; it is translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050