Gypsum, popular sulfate mineral of terrific business value, composed of hydrated calcium sulfate (CaSO4·2H2O). In very well-developed crystals the mineral generally has become named selenite. The fibrous huge selection incorporates a silky lustre and is known as satin spar; it is actually translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050