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Description

PLATINUM NUGGET
Kondyor Massif, Khabarovsk Krai, Far Eastern Federal District, Russian Federation

In the remote wilderness of Far Eastern Russia, inland from the Sea of Okhotsk, is a circular feature some six kilometers across that looks exactly like a meteorite impact crater: It isn't. Although the towering walls of the structure, some 2000 feet high, look very much like the crater rim of a volcano: They're not. The structure, called the Kondyor Massif, represents the remains of an Dunite intrusion: a mass of magma with origins deep in the mantle, that carried valuable amounts of the rare metals: Platinum, Rhodium, Gold and others to the surface of the planet. Weathering allowed the rare metals to migrate downstream, forming placer deposits. Analysis of Zircon grains in the Dunite shows that the Platinum Group Elements (PGE's) formed deep in the mantle some 2.4-1.8 billion years ago. Much later, they were injected into the surface crust some 176 -143 million years ago. Being rich in PGE's, the massif was responsible for approximately 4 tons of Platinum being produced in one year. Compared to the production of most Gold mines, this is nothing. Nuggets of Platinum the size of this one, are as rare as the proverbial hen's teeth. Deceptively heavy for its size this rounded, silvery nugget weighs 7.368 ounces troy or 229.2 grams - over half a pound!
It measures a 1.63 x 1 inch (4.22 x 2.55 cm).


[Scale: 1 inch, with mark at 1 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. 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 Dates
June, 2013
2nd
Internet/Mail/Phone Bidders: 0
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