Crystal Prospect

fluorescing WILLEMITE, HARDYSTONITE and CALCITE - Franklin Mine, Sussex Co., New Jersey, USA

Black Franklinite in subdued red SW fluorescing Calcite, with dark violet-blue SW fluorescent Hardystonite and strong green fluorescing Willemite.

from Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA – Franklinite and Hardystonite type locality

the mine is closed since 1954

Measures approximately 2.5 x 1.5 x 1.5 inch, 8.78 oz / 63 x 38 x 38mm, 249g

Price: 80.00 USD

Item # A0891213

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).