Gypsum, prevalent sulfate mineral of great business great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-made crystals the mineral usually has actually been termed selenite. The fibrous huge range features a silky lustre and is called satin spar; it is actually translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050