HARDYSTONITE and WILLEMITE in ANDRADITE - Franklin Mine, New Jersey, USA
Green SW fluorescing Willemite, blue SW fluorescent Hardystonite, red SW fluorescing Calcite, a patch of subdued orange SW fluorescing Clinohedrite on one side, and one small black Franklinite in massive yellow Andradite garnet.
The Willemite and Calcite are shortly phosphorescent - move lamp away quickly to observe.
Hardystonite is found at only a handful of localities worldwide, only two of which are "natural" (of non-anthropogenic origin)
from Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA - Hardystonite, Clinohedrite and Franklinite type locality
the mine is closed since 1954
Measures approximately 2.5 x 2.25 x 2 inch, 1 lb 0.36 oz / 63 x 57 x 51 mm, 464g
Item # A0691014
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).