Gypsum, prevalent sulfate mineral of good professional importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-created crystals the mineral commonly has long been referred to as selenite. The fibrous huge wide variety includes a silky lustre and known as satin spar; it's translucent and opalescent and is particularly valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050