Fluorescence: Fluorescence Would be the home of a mineral to emit noticeable light-weight when exposed to ultraviolet radiation. Gypsum isn't going to fluoresce beneath UV mild. Map of gypsum deposits in northern Ohio, black squares show The placement of deposits, from "Geography of Ohio", 1923 Gypsum is Employed in lots https://www.propanraya.com/id/produk/eco-gypsum-ee-4050