Gypsum, prevalent sulfate mineral of good business worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-created crystals the mineral normally continues to be known as selenite. The fibrous huge variety has a silky lustre and is termed satin spar; it can be translucent and opalescent and it is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050