Largest Meteorite Cube

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Lot 1143
Largest Meteorite Cube

Sold for US$ 22,500 inc. premium

Natural History

5 Dec 2017, 10:00 PST

Los Angeles

Largest Meteorite Cube
Muonionalusta Meteorite – Large Cube
Iron, Fine (IVA) Octahedrite
Kiruna, Norrbotten, Sweden

Dated to have impacted Northern Sweden approximately one million years ago, and initially discovered in 1906, this locality has become one of the best sites for fine octahedrite irons. Searches for the impact crater from the original shower near the Arctic Circle have been in vain, as several glacial periods have likely transported the meteorites away from the original strewn field.
These meteorites are almost always found buried under several feet of glacial moraine, and require specialized metal detectors to be found at these depths. Muonionalusta is the first meteorite in which stishovite has been identified, a rare and extremely hard silicon dioxide polymorph of quartz, formed by very high shock pressure created by the hypervelocity of a meteorite impact, giving rise to the theory that the Muonionalusta impact was one of the most violent and direct impacts on this planet.

Offered is a large cube of Muonionalusta, exhibiting the classic Widmanstatten patterns in grids of shimmering shades of gray and silver, signifying the presence of two forms of nickel-iron, kamacite and taenite. The high nickel content galvanizes the iron to some extent, which has aided immensely in the meteorite's survival for nearly one million years under conditions highly favorable to rusting. Challenging recovery conditions make these specimens uncommon on the market. The present specimen is very large in size and possesses a fine etched pattern on all surfaces. Weighing 12,255 grams; measuring 4 5/8 x 4 5/8 x 4 5/8in
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