Gypsum, common sulfate mineral of good commercial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-produced crystals the mineral generally has actually been termed selenite. The fibrous huge assortment incorporates a silky lustre and is called satin spar; it really is translucent and opalescent and is particularly valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050