Gypsum, common sulfate mineral of great industrial great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In very well-created crystals the mineral generally continues to be known as selenite. The fibrous substantial assortment provides a silky lustre and is referred to as satin spar; it is translucent and opalescent and is https://www.propanraya.com/id/produk/eco-gypsum-ee-4050