Gypsum also occurs in crystal sort, With all the two commonest types staying significant apparent crystals that will often be termed selenite, and fibrous crystals, referred to as satin spar. ‘Selenite’ is definitely the Greek term for moon, and refers back to the crystals effectively-made pearl-like luster that could mirror https://www.propanraya.com/id/produk/eco-gypsum-ee-4050