Gypsum, prevalent sulfate mineral of fantastic business significance, composed of hydrated calcium sulfate (CaSO4·2H2O). In very well-formulated crystals the mineral usually has actually been termed selenite. The fibrous large wide variety features a silky lustre and is called satin spar; it's translucent and opalescent which is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050