Gypsum, common sulfate mineral of great professional importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-created crystals the mineral commonly has actually been called selenite. The fibrous substantial wide range incorporates a silky lustre and is termed satin spar; it's translucent and opalescent and is particularly valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050