FRANKLINITE, fluorescing WILLEMITE - Sterling Mine, Sussex Co., New Jersey, USA
Green SW LW fluorescing Willemite, black Franklinite, and red fluorescing SW/pink LW Calcite.
from Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA - Franklinite type locality
Measures approximately 2 x 1.5 x 1.25 inch, 8.88 oz / 51 x 38 x 32 mm, 252g
Price: 20.00 USD
Item # A0021218
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).