fluorescent WILLEMITE with ZINCITE and FRANKLINITE - Franklin Mine, New Jersey, USA
Fluorescent "gneiss ore" - light green Willemite (fluorescent green SW/LW), red Zincite, and black Franklinite.
from Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA - Franklinite and Zincite type locality
the mine is closed since 1954
Measures approximately 3.75 x 2.5 x 1.5 inch, 11.85 oz / 95 x 63 x 38 mm, 336g
Item # A0530814
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).