Gypsum, popular sulfate mineral of fantastic commercial worth, composed of hydrated calcium sulfate (CaSO4·2H2O). In properly-designed crystals the mineral usually has actually been identified as selenite. The fibrous enormous wide variety features a silky lustre and is termed satin spar; it is translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050