Gypsum, prevalent sulfate mineral of good business great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-formulated crystals the mineral usually has become termed selenite. The fibrous enormous selection includes a silky lustre and known as satin spar; it is actually translucent and opalescent which is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050