Sphalerite, willemite, franklinite and minor calcite, from Franklin, NJ under shortwave UV light. The sphalerite fluoresces red, willemite green, calcite orange-red and the franklinite is non-fluorescent. 2 1/2" x 1 1/2". From the collection of, and photo by Robert A. Boymistruk.
Franklin-Ogdensburg Mineralogical Society Inc - FOMS, Franklin, NJ |
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