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Clinohedrite and Willemite, Franklin, New Jersey


This classic fluorescent rock from Franklin, New Jersey, contains orange fluorescent clinohedrite, green fluorescing willemite, and black non-fluorescent franklinite.  The clinohedrite and willemite fluoresce brightly under short wave UV and show phosphorescence.  A similar, but much dimmer response is seen under long wave UV.  This specimen measures 74 x 64 x 31 mm, and it weighs 246 grams.


 Mouse over the scrolling images to see UV wavelength information.





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