Gypsum, frequent sulfate mineral of fantastic industrial relevance, made up of hydrated calcium sulfate (CaSO4·2H2O). In properly-created crystals the mineral frequently continues to be named selenite. The fibrous massive range has a silky lustre and known as satin spar; it truly is translucent and opalescent and is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050