Gypsum, popular sulfate mineral of excellent industrial value, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-designed crystals the mineral commonly has long been known as selenite. The fibrous substantial wide range includes a silky lustre and is called satin spar; it really is translucent and opalescent which is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050