File:Ataxite (Santiago Papasquiero Meteorite).jpg
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Ataxite (field of view ~2.5 cm across) - a cut, polished, nitric acid-etched surface of the Santiago Papasquiero Meteorite, found in 1958 in Durango, Mexico. It consists of a finely crystalline mix of kamacite & taenite, plus other minor minerals. Santiago Papasquiero is a strange ataxite that appears to be a completely metamorphosed and recrystallized octahedrite. Most recrystallized octahedrites still retain vague hints of the original Widmanstätten structure. This meteorite doesn't have any, so it isn’t an octahedrite - it’s an ataxite. Published chemical info. indicates that Santiago Papasquiero has 7.5% nickel content overall. The kamacite component has 6.8% Ni. The taenite component has 30% Ni. |
| Date | |
| Source | Ataxite (Santiago Papasquiero Meteorite) |
| Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/14593943170. It was reviewed on 30 July 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:40, 30 July 2014 | | 1,012 × 1,047 (375 KB) | Tillman | Transferred from Flickr via Flickr2commons |
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