Dragon Minerals - Update January 20, 2019

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RF329: Sphalerite, Fluorite, and Calcite - $200
Rosiclaire level, Cross-cut Ore Body, Minerva No. 1 Mine, Hardin County, Illinois
Cabinet - 10.0 x 9.5 x 6.1 cm (3.9 x 3.7 x 2.4 inches)
Weight - 720 grams (1.59 pounds)
ex Roy Foerster collection
Specimen status: Available     Send an email to order

The body of this specimen consists of light yellow and glassy, transparent to opaque fluorite cubes. These fluorites reach 2.7 cm in size, and several have a thin but distinct purple zone near the surface. Some natural fluorite etching is seen along the edges. What makes this specimen quite different, however, is the very lustrous and glistening sphalerite 'flower', composed of layers of thin, parallel sphalerite crystals. This 'flower' -- which is nestled next to the best single fluorite cube -- is 4.3 cm wide, and accented with a few small, white calcite crystals. The sphalerite has a negligible little rub along one edge. The fluorites display a ghostly, yellow-green fluorescence under both shortwave and longwave UV (hydrocarbon inclusions?). Displays quite nicely on its naturally flat base. Something a little different in an Illinois fluorite!

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