Fluorescent Franklin Marble, from Sterling Hill NJ, 49 grams

Description

From the Sterling Hill mine in Ogdensburg NJ. Nice crystals of black Franklinite, White calcite, tan Willemite and red Zincite
Fluorescent orange/red calcite and bright green Willemite under short wave UV (254nm), the Franklinite and Zincite do not fluoresce.
43 grams.
2" length.
The willemite and Calcite fluoresce under 254nm SW UV light as well as with a good quality long wave 365nm with a bandpass filter like a convoy2  UV flashlight which I use.  The photos above were taken under SW UV.
I do combine shipping, so please request an invoice before paying.