Dims: 6.41x3.58x1.77" (16.27x9.09x4.50cm)
Wt: 21.27oz (602g)
Franklin, New Jersey, USA
This Franklin specimen nearly half Franklinite, largely in granular veins alternating with calcite crystals. Of course, the Franklinite does not fluoresce, but the calcite does. Most of the calcite fluoresces orange under short wave UV. Some of the larger and clearer crystals glow a bright orange, and some of the calcite (at least I believe it is more calcite) does not fluoresce at all. The colors in the fluorescent image are simply wrong, but the glowing areas are correct. There are a few tiny specs of willemite that glow a bright green.