Gypsum, popular sulfate mineral of excellent commercial worth, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-made crystals the mineral normally continues to be referred to as selenite. The fibrous massive assortment features a silky lustre and is named satin spar; it is actually translucent and opalescent which is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050