Gypsum, frequent sulfate mineral of great business relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-formulated crystals the mineral typically has long been named selenite. The fibrous enormous selection features a silky lustre and is named satin spar; it truly is translucent and opalescent which is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050