Gypsum, prevalent sulfate mineral of terrific commercial relevance, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-formulated crystals the mineral generally is named selenite. The fibrous significant wide variety provides a silky lustre and is named satin spar; it is actually translucent and opalescent and is particularly valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050