Gypsum Can be found in hydrothermal veins, which are fractures in rocks stuffed with mineral-rich fluids that originate from deep in the Earth's crust. The following-most significant world gypsum producer is a tie between Iran and China, the two making 16 million metric tonnes that calendar year, with Turkey and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050