Gypsum, common sulfate mineral of fantastic industrial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-created crystals the mineral usually has become known as selenite. The fibrous enormous wide range has a silky lustre and is named satin spar; it truly is translucent and opalescent and it is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050