Gypsum, common sulfate mineral of good commercial great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-produced crystals the mineral normally continues to be known as selenite. The fibrous enormous assortment has a silky lustre and is termed satin spar; it really is translucent and opalescent and it is https://www.propanraya.com/id/produk/eco-gypsum-ee-4050