Gypsum, widespread sulfate mineral of terrific business importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In properly-formulated crystals the mineral typically continues to be known as selenite. The fibrous enormous range contains a silky lustre and is called satin spar; it really is translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050