Gypsum, prevalent sulfate mineral of wonderful industrial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-designed crystals the mineral typically has actually been referred to as selenite. The fibrous significant selection has a silky lustre and is referred to as satin spar; it can be translucent and opalescent and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050