Gypsum, prevalent sulfate mineral of terrific commercial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-formulated crystals the mineral frequently continues to be called selenite. The fibrous significant variety incorporates a silky lustre and is called satin spar; it is translucent and opalescent which is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050