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Benstonite and Strontianite on Fluorite, Bethel Level, Minerva No. 1 Mine, Minerva Oil Company, Cave-in-Rock District, Southern Illinois, Mined c. 1960’s, ex. Shorty Millikan, Ron Roberts Collection UD-34, Miniature 3.0 x 4.5 x 6.0 cm, $200. Online 5/11.


  • $ 20000

Light blue fluorite richly covered with benstonite and localized druse of acicular strontianite.  In excellent condition and a fine miniature of this rare species.