Gypsum Can be found in hydrothermal veins, which can be fractures in rocks filled with mineral-abundant fluids that originate from deep in the Earth's crust. Normal gypsum is mined from geological deposits. These deposits are typically found in sedimentary rock formations produced from the evaporation of historic seas. Pure gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050