File:Allende meteorite, carbonaceous chondrite (14601454299).jpg
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![File:Allende meteorite, carbonaceous chondrite (14601454299).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4b/Allende_meteorite%2C_carbonaceous_chondrite_%2814601454299%29.jpg/800px-Allende_meteorite%2C_carbonaceous_chondrite_%2814601454299%29.jpg?20140815144655)
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DescriptionAllende meteorite, carbonaceous chondrite (14601454299).jpg |
Allende meteorite, carbonaceous chondrite. Allende has small, spherical to subspherical structures called chondrules (all chondrites have these). Allende also contains whitish, irregularly-shaped patches called CAIs (“calcium-aluminum inclusions”), composed of high-temperature Ca-Al-Ti silicates & oxides. The blackish, fine-grained, carbon-rich matrix consists of Fe-olivine & poorly graphitized carbon. A few tiny specks of metallic iron-nickel alloy also occur. Allende rocks represent the near-oldest meteoritic material known. The olivine chondrules in Allende rocks date to 4.560 billion years. The CAIs in Allende rocks date to 4.568 billion years. |
Date | |
Source | Carbonaceous chondrite (Allende Meteorite) (4.560-4.568 Ga) 3 |
Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/14601454299. It was reviewed on 15 August 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
15 August 2014
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current | 14:46, 15 August 2014 | ![]() | 2,692 × 1,930 (3.53 MB) | Basilicofresco (talk | contribs) | Transferred from Flickr via Flickr2commons |
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Orientation | Normal |
Horizontal resolution | 3,200 dpi |
Vertical resolution | 3,200 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 14:36, 30 July 2014 |
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Image width | 2,692 px |
Image height | 1,930 px |
Date and time of digitizing | 10:35, 30 July 2014 |
Date metadata was last modified | 10:36, 30 July 2014 |