Fluorescence: Fluorescence Is the house of a mineral to emit obvious gentle when exposed to ultraviolet radiation. Gypsum does not fluoresce underneath UV light. Map of gypsum deposits in northern Ohio, black squares indicate The placement of deposits, from "Geography of Ohio", 1923 Gypsum is used in numerous types of https://www.propanraya.com/id/produk/eco-gypsum-ee-4050