Gypsum, frequent sulfate mineral of fantastic commercial importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-created crystals the mineral commonly continues to be termed selenite. The fibrous large selection contains a silky lustre and is referred to as satin spar; it really is translucent and opalescent which is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050