Gypsum, prevalent sulfate mineral of good commercial great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-formulated crystals the mineral commonly is referred to as selenite. The fibrous enormous selection includes a silky lustre and is referred to as satin spar; it is translucent and opalescent and is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050