Gypsum, widespread sulfate mineral of fantastic business worth, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-developed crystals the mineral generally has become named selenite. The fibrous significant range provides a silky lustre and is referred to as satin spar; it's translucent and opalescent and it is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050