Gypsum, typical sulfate mineral of excellent professional value, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-formulated crystals the mineral generally has become called selenite. The fibrous substantial wide range contains a silky lustre and is referred to as satin spar; it really is translucent and opalescent and is also valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050