Gypsum, frequent sulfate mineral of good professional significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-produced crystals the mineral usually is termed selenite. The fibrous significant selection incorporates a silky lustre and known as satin spar; it really is translucent and opalescent and is particularly valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050