Gypsum, prevalent sulfate mineral of wonderful commercial great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In very well-designed crystals the mineral normally continues to be identified as selenite. The fibrous enormous selection contains a silky lustre and known as satin spar; it can be translucent and opalescent and it https://www.propanraya.com/id/produk/eco-gypsum-ee-4050