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Calcite fluoresces orange with what may be Sphalerite causing a blue-purple tint contrasting the bright green fluorescence of the Willemite, which is also Phosphorescent. Photographed under under 254 Shortwave UV light. Collected from the then-active, legendary Franklin Mine in Franklin NJ, one of the most unique geological assemblages on the planet. 3" x 2.75" x 3.75", 13.7 oz.

Calcite & Willemite. Franklin Mine, Franklin, NJ.


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