Gypsum, popular sulfate mineral of terrific business importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-developed crystals the mineral usually has actually been termed selenite. The fibrous enormous wide range provides a silky lustre and is named satin spar; it really is translucent and opalescent and is also valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050