Gypsum, frequent sulfate mineral of good business significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In very well-created crystals the mineral commonly has become called selenite. The fibrous massive wide variety contains a silky lustre and is known as satin spar; it really is translucent and opalescent and it is https://www.propanraya.com/id/produk/eco-gypsum-ee-4050