Gypsum, common sulfate mineral of great business worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In very well-developed crystals the mineral frequently continues to be referred to as selenite. The fibrous large selection incorporates a silky lustre and is known as satin spar; it really is translucent and opalescent and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050