Gypsum, typical sulfate mineral of fantastic professional great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-made crystals the mineral typically continues to be identified as selenite. The fibrous huge selection has a silky lustre and is named satin spar; it is translucent and opalescent which is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050