Mineral Fluorescence and Phosphorescence: a 405nm laser pointer excites the natural mineral Franklin calcite in the rock to briefly flash a red glow via “brief intense phosphorescence”(BIP) seen here as a trail of light following the violet laser dot on this spectacular specimen from the Sterling Hill zinc mine out of New Jersey. Next, shortwave UV reveals brilliant colors of fluorescence- Willemite fluoresces bright green and Calcite (with trace percent Manganese activator) glows pink/orange- a