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