Gypsum, prevalent sulfate mineral of great business value, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-designed crystals the mineral generally has been identified as selenite. The fibrous enormous wide variety contains a silky lustre and is named satin spar; it really is translucent and opalescent and it is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050