Map Of gypsum deposits in northern Ohio, black squares point out The situation of deposits, from "Geography of Ohio", 1923 Gypsum is Utilized in a wide variety of apps: Deposition: Gypsum originally sorts as dissolved calcium and sulfate ions in h2o. These ions can originate from a range of sources, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050