Gypsum, popular sulfate mineral of fantastic business relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-developed crystals the mineral typically is identified as selenite. The fibrous enormous wide variety provides a silky lustre and is referred to as satin spar; it's translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050