Soubor:Widmanstatten IronMet.JPG
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Widmanstatten_IronMet.JPG (399 × 269 pixelů, velikost souboru: 45 KB, MIME typ: image/jpeg)
- Description
- Gibeon meteorite, etched slice. University of New Mexico, Institute of Meteoritics. Widmanstätten-Figuren (NASA). Iron meteorites probably formed in the cores of asteroids, and were released when the asteroids were shattered by impacts. Inside, many iron meteorites are made of criss-crossing intergrown crystals of two iron-nickel minerals. The two types of crystals in this sample are several centimeters wide. The sizes and shapes of the crystals suggest that they cooled down so slowly, a few degrees each million years, that they must have been inside large asteroids.
- Source
- http://www-curator.jsc.nasa.gov/outreach/expmetmys/slideset/slides35-42.cfm d: German Wikipedia, original upload 18:45, 30. Jun 2004 by Srbauer en:Image:Widmanstatten IronMet.JPG
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Datum a čas | Náhled | Rozměry | Uživatel | Komentář | |
|---|---|---|---|---|---|
| současná | 10. 12. 2005, 02:19 | | 399 × 269 (45 KB) | wikimediacommons>Saperaud~commonswiki | *'''Description:''' Widmanstätten-Figuren (NASA) :Iron meteorites are made almost entirely of iron metal with some nickel. As with stony meteorites, iron meteorites also have fusion crusts and show distinct molten metal shapes and flow markings, like tho |
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