Mylonitized ore, willemite, franklinite and calcite from the 750 foot level near the zero fault, Sterling Hill, Ogdensburg, NJ under shortwave UV light. The willemite fluoresces green, calcite red-orange, and the franklinite is non-fluorescent. 5 1/2" x 3 1/2". From the collection of Zack and Ralph Bonard, photo by WP.
Franklin-Ogdensburg Mineralogical Society Inc - FOMS, Franklin, NJ |
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