Gypsum, common sulfate mineral of fantastic industrial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-made crystals the mineral frequently has long been termed selenite. The fibrous substantial wide range contains a silky lustre and known as satin spar; it is translucent and opalescent and it is valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050