Gypsum, typical sulfate mineral of wonderful commercial significance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-formulated crystals the mineral typically has actually been known as selenite. The fibrous large wide variety incorporates a silky lustre and is termed satin spar; it's translucent and opalescent which is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050