Gypsum, frequent sulfate mineral of terrific business worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-designed crystals the mineral usually has long been identified as selenite. The fibrous substantial range features a silky lustre and is known as satin spar; it is actually translucent and opalescent and is particularly https://www.propanraya.com/id/produk/eco-gypsum-ee-4050