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    Description

    SPECTACULAR TIGER'S EYE FREE-FORM SLAB
    Mount Brockman Station, Pilbara, Western Australia

    This slab is a mixed example of the incomparable Marra Mamba Tiger's Eye and Tiger Iron, which were formed by processes that began, unbelievably, over two and a half billion years ago! Dissolved Iron mixed with oxygen and was used by bacterial colonies to form "banded iron formations" of iron-rich and silica-rich bands. Geological processes then resulted in the crystallization of layers which caused Riebeckite to be formed. Earth movements caused distortion of layers, and Riebeckite crystals were replaced by silica resulting in the formation of Tiger's Eye with a fine dusting of yellow Goethite outlining the original crystal shapes. Continued mineral replacement resulted in the myriad of colors which make Marra Mamba Tiger's Eye so treasured. This long rectangular free-formed piece has flowing organic edges and features these vivid colors and chatoyancy representative of the Marra Mamba material. This specimen is truly outstanding on many levels and the colorful banding can be displayed either vertically or horizontally. This slab is backed with fiberglass to give it additional strength and is in pristine condition.
    Overall Measurements: 34 x 13.5 x 0.47 inches (86.36 x 34.29 x 1.20 cm)


    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
    September, 2014
    28th Sunday
    Bids + Registered Phone Bidders: 2
    Lot Tracking Activity: N/A
    Page Views: 710

    Buyer's Premium per Lot:
    25% on the first $100,000 (minimum $14), plus 20% of any amount between $100,000 and $1,000,000, plus 12% of any amount over $1,000,000 per lot.

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