Gypsum, prevalent sulfate mineral of good commercial great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-produced crystals the mineral typically has actually been called selenite. The fibrous enormous wide range provides a silky lustre and is known as satin spar; it really is translucent and opalescent which is https://www.propanraya.com/id/produk/eco-gypsum-ee-4050