Gypsum, frequent sulfate mineral of great industrial value, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-designed crystals the mineral generally has actually been identified as selenite. The fibrous huge range contains a silky lustre and known as satin spar; it can be translucent and opalescent and it is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050