Gypsum, typical sulfate mineral of great industrial worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-created crystals the mineral normally has been called selenite. The fibrous massive wide range includes a silky lustre and is referred to as satin spar; it's translucent and opalescent which is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050