Gypsum, popular sulfate mineral of great professional value, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-formulated crystals the mineral typically has been identified as selenite. The fibrous significant assortment has a silky lustre and is named satin spar; it really is translucent and opalescent and is particularly valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050