Description

    SUPER PHOSPHORESCENT "RADIATING" WILLEMITE
    Franklin, Sussex Co, New Jersey
    This specimen is the type of Willemite that is considered the very best and most desirable type of the mineral, next to the more euhedral forms (see Lot 49008). It is the rare and somewhat legendary "radiating" Willemite, probably the most phosphorescent natural Willemite known, as well as a very rare semi-crystallized form. It gets its "radiating" moniker from the round fans of radiating, needle-like crystals, which can measure up to a few inches across in the most exceptional specimens. These are not terminated crystals but are found in thin veins in a very select few small occurrences at Franklin and Sterling Hill in New Jersey. Perhaps the biggest appeal of these "radiators" is their super phosphorescence, the property of continuing to emit light for extremely long periods of time after the exciting rays of ultraviolet have been removed. The Willemite fluoresces brilliant green under shortwave UV, and phosphoresces the same color so intensely that with dark-adapted eyes, the phosphorescence has been observed in this sort of specimen up to three days after UV exposure. Yet more incredibly, instruments have detected this phosphorescence years after UV exposure. The present specimen measures 3¾ x 2 x 1½ inches (9.5 x 5 x 3.8 cm) and has an exposed surface of yellowish radiating crystals measuring about 2 inches (5 cm) long by 1 inch (2.5 cm) wide, showing minimal divergence in the crystals, making one wonder just how big a complete "eye" might have been. Surrounding this surface is a non-fluorescent area containing two thinner veinlets of radiating Willemite, while the matrix is red fluorescing Calcite, containing grains and stringers of fluorescing Willemite and non-fluorescent black Franklinite, all arranged with the utmost natural artistry - a truly fascinating, beautiful, and very rare Franklin fluorescent specimen.

    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: 3
    Lot Tracking Activity: N/A
    Page Views: 1,161

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