Gypsum, common sulfate mineral of wonderful business great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-made crystals the mineral typically continues to be identified as selenite. The fibrous massive wide variety incorporates a silky lustre and is known as satin spar; it really is translucent and opalescent and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050