Gypsum, prevalent sulfate mineral of fantastic professional importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-made crystals the mineral normally has become referred to as selenite. The fibrous enormous wide range provides a silky lustre and is named satin spar; it is translucent and opalescent and is also valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050