Gypsum, typical sulfate mineral of fantastic industrial relevance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-created crystals the mineral typically has become called selenite. The fibrous large assortment features a silky lustre and is called satin spar; it is translucent and opalescent and is valued for ornaments and jewellery. Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050