Gypsum, typical sulfate mineral of good professional relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-made crystals the mineral normally has actually been identified as selenite. The fibrous massive selection has a silky lustre and known as satin spar; it is actually translucent and opalescent and is particularly valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050