Gypsum, typical sulfate mineral of terrific commercial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-designed crystals the mineral commonly continues to be called selenite. The fibrous substantial variety incorporates a silky lustre and is referred to as satin spar; it's translucent and opalescent and is also valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050