Gypsum, prevalent sulfate mineral of wonderful professional significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-produced crystals the mineral typically continues to be known as selenite. The fibrous huge selection incorporates a silky lustre and is referred to as satin spar; it's translucent and opalescent and is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050