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Sphalerite with Fluorite and Barite, Rosiclare Level, Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined c. 1992, Ron Roberts Collection UD-28, Small Cabinet 2.5 x 6.0 x 8.0 cm, $65. Online September 14.


  • $ 3900
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Blades of sphalerite with "snow on the roof" barite and associated fluorite.  The bizarre form of the sphalerite is the result of inter-growth with barite. The barite later dissolved leaving this unique structure. No point of attachment and in excellent condition.  Ex: Harold "Shorty" Millikan Collection of Rosiclare, IL.