Description

    DOLOMITE AND CALCITE - AN UNUSUAL BI-COLORED FRANKLIN FLUORESCENT Sterling Hill, Sussex Co, New Jersey
    When first discovered, this shortwave UV fluorescent material was thought to be two different generations of the same mineral: Calcite. One, fluorescing a bright, deep red and the other showing more intensely fluorescing, red-orange spots. It therefore acquired the nickname "Crazy Calcite". Eventually however, in the 1970s, a Franklin collector had the material tested, and to everyone's surprise, the deep red fluorescing material turned out to be Dolomite, while the red-orange fluorescent was indeed Calcite, thereby clearing up the mystery. Such specimens are found in both Franklin proper and at Sterling Hill, the latter being the source of this particular example, 5½ x 3½ x 2½ inches (14 x 8.9 x 6.4 cm), vividly dotted with non-fluorescent black Franklinite. It is fairly scarce from either locale. Offered at no reserve.

    Provenance: ex. Hugh Ronemus Collection


    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
    May, 2012
    20th Sunday
    Bids + Registered Phone Bidders: 6
    Lot Tracking Activity: N/A
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