Calcite druze on franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under longwave UV light. The calcite fluoresces yellow to orange-red, the franklinite and willemite are non-fluorescent. 5" x 1 3/4". From the collection of, and photo by WP.
Franklin-Ogdensburg Mineralogical Society Inc - FOMS, Franklin, NJ |
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