Gypsum, prevalent sulfate mineral of good commercial relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-designed crystals the mineral normally has been called selenite. The fibrous substantial range incorporates a silky lustre and is termed satin spar; it's translucent and opalescent which is valued for ornaments and jewellery. Salt https://www.propanraya.com/id/produk/eco-gypsum-ee-4050