Fluorescence: Fluorescence is definitely the property of the mineral to emit visible light-weight when exposed to ultraviolet radiation. Gypsum doesn't fluoresce underneath UV light-weight. Hydration of Anhydrite: Gypsum could also form through the hydration of anhydrite (CaSO₄). Anhydrite is actually a calcium sulfate mineral that lacks the water molecules present https://www.propanraya.com/id/produk/eco-gypsum-ee-4050