Gypsum, common sulfate mineral of wonderful commercial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In very well-created crystals the mineral commonly has long been identified as selenite. The fibrous enormous selection features a silky lustre and is termed satin spar; it truly is translucent and opalescent and it is https://www.propanraya.com/id/produk/eco-gypsum-ee-4050