Map Of gypsum deposits in northern Ohio, black squares show the location of deposits, from "Geography of Ohio", 1923 Gypsum is Utilized in numerous types of apps: Deposition: Gypsum at first sorts as dissolved calcium and sulfate ions in drinking water. These ions can come from a number of sources, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050