Gypsum, common sulfate mineral of good professional worth, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-made crystals the mineral generally continues to be identified as selenite. The fibrous substantial wide range incorporates a silky lustre and known as satin spar; it really is translucent and opalescent and it is valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050