Gypsum, popular sulfate mineral of great industrial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-made crystals the mineral generally has actually been termed selenite. The fibrous significant selection provides a silky lustre and is referred to as satin spar; it truly is translucent and opalescent and is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050