Gypsum, typical sulfate mineral of excellent commercial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-formulated crystals the mineral typically has become named selenite. The fibrous huge wide variety features a silky lustre and is known as satin spar; it truly is translucent and opalescent and is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050