Margarite, calcite, corundum crystals, rutile and minor pyrite from the Sterling Hill Mine, Ogdensburg, NJ under longwave UV light. The margarite fluoresces weak gray-blue, corundum red, the calcite, rutile and pyrite are non-fluorescent. Field of view 2". From the collection of, and photo by Robert A. Boymistruk.
Franklin-Ogdensburg Mineralogical Society Inc - FOMS, Franklin, NJ |
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