Gypsum, popular sulfate mineral of good commercial value, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-designed crystals the mineral usually has become named selenite. The fibrous large selection incorporates a silky lustre and is known as satin spar; it really is translucent and opalescent and is also valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050