Gypsum, typical sulfate mineral of great professional significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-created crystals the mineral commonly is referred to as selenite. The fibrous substantial assortment has a silky lustre and known as satin spar; it is actually translucent and opalescent and is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050