Gypsum, typical sulfate mineral of fantastic business importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-made crystals the mineral commonly has actually been termed selenite. The fibrous massive wide variety provides a silky lustre and is named satin spar; it really is translucent and opalescent and is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050