Gypsum, widespread sulfate mineral of excellent business relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-designed crystals the mineral typically has actually been termed selenite. The fibrous huge range has a silky lustre and is called satin spar; it is translucent and opalescent and is valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050