Gypsum, frequent sulfate mineral of wonderful industrial relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-designed crystals the mineral commonly has become identified as selenite. The fibrous huge wide range contains a silky lustre and is known as satin spar; it's translucent and opalescent and is particularly valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050