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Ilfeld, Nordhausen, Harz, Thuringia, Germany
If it wasn't for the Ilfeld Manganese mines, Manganite would be relegated to back row status in the Pantheon of Fine Minerals. Fortunately, Manganite was rescued from obscurity by the brilliant, midnight-black crystal groups found in this part of the Harz Mountains. Of the various Manganite groups known, the one seen here is arguably in the top 5. Single crystals run riot over the upper surface of a massive Manganite/Pyrolusite matrix, with thin layers of the original wall rock visible on the absolute bottom of the specimen. Many of the crystals are over one inch, and some are much larger: up to 1.88 inches (4.74 cm). At better than 6.5 inches (16.5 cm) in length, this is not a small example of this mineral; it is a whopper of a Manganite group. The condition of this 'black beauty' is absolutely pristine with no visible damage. As befits a world-class specimen of Ilfeld Manganite, it comes with a custom acrylic base.
Overall Measurements: 6.49 x 3.34 x 2.65 inches (16.5 x 8.5 x 6.74 cm)
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.
Service and Handling Description: Flat Art Small Set (15-20) (view shipping information)
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