Gypsum, prevalent sulfate mineral of wonderful commercial importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-made crystals the mineral commonly has long been identified as selenite. The fibrous substantial wide variety incorporates a silky lustre and is called satin spar; it truly is translucent and opalescent and is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050