Map Of gypsum deposits in northern Ohio, black squares show The situation of deposits, from "Geography of Ohio", 1923 Gypsum is Utilized in lots of apps: Gypsum can be found in hydrothermal veins, which are fractures in rocks stuffed with mineral-rich fluids that originate from deep within the Earth's crust. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050