Gypsum, common sulfate mineral of wonderful business value, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-designed crystals the mineral frequently is termed selenite. The fibrous large assortment includes a silky lustre and known as satin spar; it can be translucent and opalescent and is also valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050