Crystal Prospect

fluorescent WILLEMITE with FRANKLINITE - Franklin, New Jersey, USA

Light green Willemite with black Franklinite and a little of Calcite. The Willemite is fluorescent green under SW and LW UV, Calcite - orange SW.

from Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA

the mine is closed since 1954

Measures approximately 4 x 1.5 x 1.5 inch, 11.74 oz / 102 x 38 x 38 mm, 333g

Price: 45.00 USD

Item # A0440115

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).