Gypsum, common sulfate mineral of excellent industrial value, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-formulated crystals the mineral usually continues to be termed selenite. The fibrous significant selection has a silky lustre and known as satin spar; it truly is translucent and opalescent which is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050