Gypsum are available in hydrothermal veins, that happen to be fractures in rocks stuffed with mineral-rich fluids that originate from deep in the Earth's crust. Pure gypsum is mined from geological deposits. These deposits are typically found in sedimentary rock formations established because of the evaporation of ancient seas. Purely https://www.propanraya.com/id/produk/eco-gypsum-ee-4050