Gypsum, common sulfate mineral of good business relevance, composed of hydrated calcium sulfate (CaSO4·2H2O). In very well-developed crystals the mineral generally is referred to as selenite. The fibrous enormous wide range incorporates a silky lustre and is known as satin spar; it is translucent and opalescent and is particularly valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050