fluorescent WILLEMITE with FRANKLINITE - Franklin Mine, New Jersey, USA
Fluorescent green SW LW Willemite with weak short lived phosphorescence after SW illumination, with black Franklinite.
from Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA – Franklinite type locality
the mine is closed since 1954
Measures approximately 4 x 2 x 2 inch, 1 lb 8.01 oz / 102 x 51 x 51 mm, 681g
Price: 200.00 USD
Item # A0070320
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).