HARDYSTONITE, WILLEMITE and RHODONITE - Franklin Mine, New Jersey, USA
A magnificent specimen of Willemite (fluorescing green SW and LW UV), Hardystonite (fluorescent deep blue SW, blue-violet LW), pink Rhodonite, black Franklinite, in grayish Calcite (fluorescent light pink LW and red SW with phosphorescent flash). One surface is polished.
from Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA- type locality for Hardystonite and Franklinite
Measures approximately 5 x 3.75 x 1.5 inch, 1 lb 13.45 oz / 127 x 95 x 38 mm, 835g
Item # A0010721
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 power lamp = brighter response).