Gypsum, frequent sulfate mineral of good professional significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-created crystals the mineral frequently has actually been identified as selenite. The fibrous substantial wide variety contains a silky lustre and is termed satin spar; it is actually translucent and opalescent and is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050