Fluorite With Chalcopyrite
Large Cabinet, 23.6 x 12.6 x 11.4 cm
Sub-Rosiclare Level, Denton Mine, Illinois, USA

Large fluorite crystals, to 8.8 cm across, are festooned with drusy calcite and pyrite. The fluorite crystals are lustrous and translucent along with a fine purple color, and exhibit thin color zoning at the terminations. The crystals emit a dark purple fluorescent color (due to hydrocarbon inclusions?) when lit in UV. Overall, it is just a big, huge, impressive fluorite in remarkable condition - A little dark, but with impressive geometry. Weight is about 6 pounds. RCL0434

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