Gypsum, typical sulfate mineral of fantastic industrial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-developed crystals the mineral typically has become known as selenite. The fibrous enormous wide range includes a silky lustre and is referred to as satin spar; it is actually translucent and opalescent and it https://www.propanraya.com/id/produk/eco-gypsum-ee-4050