Gypsum, prevalent sulfate mineral of good industrial relevance, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-made crystals the mineral generally has long been identified as selenite. The fibrous enormous wide range provides a silky lustre and is named satin spar; it truly is translucent and opalescent and it is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050