Gypsum, typical sulfate mineral of terrific professional importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In nicely-created crystals the mineral typically continues to be called selenite. The fibrous significant variety provides a silky lustre and is termed satin spar; it can be translucent and opalescent and is particularly valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050