fluorescent WILLEMITE with ZINCITE, FRANKLINITE - type locality - Sterling Hill, New Jersey, USA
Black Franklinite in red Zincite, with bands of green SW LW fluorescing Willemite and some weak red SW fluorescent Calcite.
there’s some scattered yellow fluorescence coming from Zincite (rare) and 3 pinpoints of violet fluorescing Sphalerite (rare association to Zincite)
from Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA – Franklinite and Zincite type locality
Measures approximately 3 x 2 x 0.25 inch, 3.17 oz / 76 x 51 x 6 mm, 90g
Item # A0870115
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)