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Sale 71
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Lot 671
Meteorite Seymchan Pallasite. Two meteorites weighing 323 Kg were found in 1967 in Seymchan, a Magadan district in far eastern Russia. Originally, Seymchan was believed to be just an iron-nickel meteorite but just recently olivine crystals were found in parts of some of the Seymchan meteorites which makes it a far rarer Pallasite. Pallasites are literally gemstones from outer space containing olivine crystals mixed in with the iron-nickel matrix. This large 5.25 x 5 inch 765 gram (1.5 pound) section has been polished and etched on both sides to display the lovely, deep and distinctive Widmanstatten pattern found on a Seymchan as well as a few brown oxidized olivine crystals on one of the corners that make Seymchan a rare Pallasite. Widmanstatten patterns are unique to iron-nickel meteorites and are not found on any rocks on earth because the parent asteroid had to have been large enough to allow a slow cooling rate in the core of only a few degrees per million years. Widmanstatten patterns are created by the separation of two allows of nickel, Kamacite low in nickel and Taenite with a high nickel content. The resulting crystalline structure of intersecting bands can be used to identify the meteorite with the bands being smaller with higher nickel content. Only the rare Glorietta Mountain Pallasite has a similar Widmanstatten pattern and olivine crystals to Seymchan. It has been speculated that Seymchan could possibly be from the huge 348 Km crater on Vesta (2nd largest asteroid) which when impacted by a large asteroid ejected material all the way down to near its core. This is a museum quality and size section of one of the most beautiful and stable Pallasites and is displayed on an illusion stand.
Add $20 for domestic shipping.
Estimated Value $1,500 - 2,000.
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