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    Description

    PHOSGENITE
    Monteponi Mine, Iglesias, Carbonia-Iglesias Province, Sardinia, Italy

    Many minerals are composed of fairly common elements. In the case of Phosgenite, the constituents are Lead, Chlorine, Carbon and Oxygen: none of which are particularly rare when considered on a worldwide basis. The reason Phosgenite is rare is that the range of temperatures and concentrations that these elements need to combine into Phosgenite are quite restricted. Anything outside of these conditions will yield some other mineral(s). As a direct result, good examples of this Lead mineral are scarce and highly valued. The best material came from the Monteponi Mine where stubby, flat-topped crystals of high transparency and tan coloration were found in association with massive Galena and other alteration minerals as well. This specimen, originally from the collection of E. Mitchell Gunnell, noted Colorado dealer and collector, shows excellent luster and grades imperceptibly into a matrix of intermixed Galena. It is in excellent to pristine condition and is accompanied by the original Gunnell label.
    Overall Measurements: 2.5 x 2.0 x 1.75 inches (6.35 x 5.08 x 4.45 cm)
    Offered at no reserve.

    Provenance: Western Minerals, ex. David New Collection, ex. E. Mitchell Gunnell Collection, ex. Wayne Leicht Collection [Hoppel #D1707]


    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.

    Auction Info

    Auction Dates
    May, 2014
    4th Sunday
    Bids + Registered Phone Bidders: 0
    Lot Tracking Activity: N/A
    Page Views: 878

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