Gypsum, popular sulfate mineral of excellent commercial importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-developed crystals the mineral frequently continues to be known as selenite. The fibrous significant wide variety features a silky lustre and is termed satin spar; it is translucent and opalescent which is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050