Gypsum, widespread sulfate mineral of wonderful business value, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-produced crystals the mineral typically has become termed selenite. The fibrous large range contains a silky lustre and is known as satin spar; it can be translucent and opalescent and is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050