Gypsum, prevalent sulfate mineral of good professional great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-produced crystals the mineral typically is called selenite. The fibrous substantial selection incorporates a silky lustre and is 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