Fluorite, calcite and franklinite from Franklin, NJ under shortwave UV light. The fluorite fluoresces gray-blue to lavender, calcite orange-red, and the franklinite is non-fluorescent. 2 3/4" x 2". From the collection of, and photo by Robert A. Boymistruk.
Franklin-Ogdensburg Mineralogical Society Inc - FOMS, Franklin, NJ |
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