Description

    BENSTONITE on CALCITE with FLUORITE
    Bethel Level, Minerva No. 1 Mine, Cave-in-Rock Dist., Hardin Co., Illinois, USA

    The rarely seen Barium mineral Benstonite occasionally appears associated with Hardin County, Illinois, Fluorite specimens, most notably from the Minerva #1 mine. This fine example, mined in the 1960's, features white Benstonite presenting as a late-stage epitaxial overgrowth on cream colored Calcite of a tabular "poker-chip" habit, arranged in stacks of crystals up to 1½ inches in height. The Benstonite "stacks" overcoat and partially obscure simple cubes of blue and golden Fluorite up to 1¾ inch on edge. Overall condition of this rare and fine example is excellent with the only observable damage occurring on bottom or back surfaces where the specimen was attached to the fissure wall. Now that the mines are closed, the supply of this extremely rare mineral exists only insofar as extant collections are brought to market.
    Overall measurements: 5.5 x 6 inches (14 x 15.2 cm). Offered at no reserve.

    Provenance: Western Minerals [Hoppel Catalog # D1703]


    [Scale: 1 inch, with mark at 1 cm]




    Condition Report*:

    Condition report available upon request.

    *Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. All lots are sold "AS IS" under the Terms & Conditions of Auction.

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    Auction Info

    Auction Dates
    June, 2013
    2nd Sunday
    Bids + Registered Phone Bidders: 2
    Lot Tracking Activity: N/A
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