Gypsum, typical sulfate mineral of wonderful business significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-created crystals the mineral normally has been known as selenite. The fibrous massive assortment provides a silky lustre and is known as satin spar; it is actually translucent and opalescent and is particularly valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050