Gypsum, typical sulfate mineral of excellent business worth, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-developed crystals the mineral typically has become termed selenite. The fibrous huge range features a silky lustre and is called satin spar; it truly is translucent and opalescent and is particularly valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050