GYPSUM, MAGNETITE, fluorescent CALCITE – Sterling Mine, Sussex Co., New Jersey, USA
Colorless clear Gypsum sheets in fluorescent red SW / pink LW Calcite, with black Magnetite and green Malachite.
ex "Sterling Hill Mining Museum, operated by the Hauck Family"
Measures approximately 4 x 2.5 x 1.5 inch, 8.64 oz / 102 x 63 x 38 mm, 245g
To show the fluorescent response the specimen was illuminated using 6 watt 254nm (Short Wave) / 366nm (Long Wave) UVGL-58 lamp (you need a proper UV light source to observe the fluorescence, more powerful lamp = brighter response).