Fluorescence: Fluorescence Would be the house of a mineral to emit noticeable light when exposed to ultraviolet radiation. Gypsum isn't going to fluoresce under UV light. Map of gypsum deposits in northern Ohio, black squares point out the location of deposits, from "Geography of Ohio", 1923 Gypsum is Utilized in https://www.propanraya.com/id/produk/eco-gypsum-ee-4050