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    Description

    BENSTONITE on CALCITE on FLUORITE
    Minerva No. 1 Mine, Ozark-Mahoning Group, Cave-in-Rock Sub-Dist., Illinois-Kentucky Fluorspar Dist., Hardin Co., Illinois, USA

    In the human drive for undying fame, one could do worse than Orlando J. Benston: ore treatment metallurgist with the University of Illinois. His name will forever be associated with a complex Carbonate mineral combining five other elements, of which Barium is probably the most significant. That Orlando was associated with the U. of Illinois was no accident, some of the finest examples of the rare combination have come from the mines of Hardin Co, Illinois. This excellent Benstonite is from one of the most renowned of that county's locations: the Minerva #1 Mine in the Cave-in-Rock District. The "matrix" is a mass of blue and purple Fluorite crystals overlain with a forest of pyramidal Calcite crystals, which in turn host white, tabular encrustations of Benstonite. There is one 'dinged' area on the periphery of the group, otherwise excellent condition. It was judged exceptional enough for it to be featured in The Mineralogical Record in 1997.
    Overall Measurements: 4.9 x 3.2 x 2.4 x inches (12.5 x 8.1 x 6.2 cm)
    Offered at no reserve.

    Provenance: Ex: William Severance Collection (#99.32), ex. Weinrich Collection, ex. Steve Neely Collection. With labels to match.
    Illustration: The Mineralogical Record. Vol. 28-1, p 29, Fig. 40. 1997.


    Estimate: $3,000 - $4,000.

    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. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. 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
    September, 2014
    28th Sunday
    Bids + Registered Phone Bidders: 0
    Lot Tracking Activity: N/A
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