Gypsum, frequent sulfate mineral of fantastic industrial value, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-created crystals the mineral normally is named selenite. The fibrous large wide range contains a silky lustre and is referred to as satin spar; it's translucent and opalescent and is also valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050