Gypsum, typical sulfate mineral of excellent professional worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-designed crystals the mineral usually has become termed selenite. The fibrous significant variety includes a silky lustre and is termed satin spar; it can be translucent and opalescent and is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050