Gypsum, common sulfate mineral of fantastic commercial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-developed crystals the mineral typically continues to be named selenite. The fibrous huge selection incorporates a silky lustre and is named satin spar; it can be translucent and opalescent and is particularly valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050