fluorescent SPHALERITE with ZINCITE - Franklin, New Jersey, USA
Blue SW LW fluorescing Sphalerite "Cleiophane" with green SW fluorescent (some phosphorescent) Willemite, black Franklinite-Magnetite (magnetic) crystals, and red Zincite.
the association of Zincite and Sphalerite is rare
ex Franklin Mineral Museum - ex Dru Wilbur
Measures approximately 4.5 x 2.5 x 2 inch, 1 lb 11.67 oz / 114 x 63 x 51 mm, 784g
Price: 400.00 USD
Item # A0380614
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).