Crystal Prospect

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).