Gypsum, typical sulfate mineral of wonderful commercial worth, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-developed crystals the mineral normally has actually been termed selenite. The fibrous massive selection provides a silky lustre and is called satin spar; it truly is translucent and opalescent and is particularly valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050