Description

    NWA 725 METEORITE - LARGE COMPLETE SLICE OF VALUABLE WINONAITE
    Acapulcoite - ACAP
    Morocco - (30° 36'N, 5° 3'W)
    NWA 725 was originally classified as an Acapulcoite - a rare subclass of meteorites. Oxygen isotope analysis, however, resulted in it being reclassified as something rarer still: one of only 25 known winonaites. The existence of NWA 725 helped foster acceptance of the idea that chondrules can exist in meteorites traditionally classified as being achondritic (i.e., without chondrules). This complete slice of a primitive achondrite is not, in fact, achondritic - it's full of visible chondrules sprinkled in the meteorite's slate grey matrix. Winonaites are largely composed of fine-grained Mg-rich pyroxene with some olivine, plagioclase and troilite, and Ni-Fe metal. Also referred to as metachondrites, winonaites experienced extensive heating that resulted in a depletion of trace elements commonly associated with ordinary chondrites. Difficult to obtain in any quantity, this is an exceptional complete slice of a highly exotic and sought after meteorite. 194 x 126 x 4mm (7.66 x 5 x 0.2 inches) and 195.28 grams (0.43 pounds).


    Estimate: $10,000 - $12,000.

    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. 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 Dates
    October, 2012
    14th Sunday
    Bids + Registered Phone Bidders: 0
    Lot Tracking Activity: N/A
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