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| Northwest Africa 5549 | |||||||||||||||||||||
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| Basic information | Name: Northwest Africa 5549 This is an OFFICIAL meteorite name. Abbreviation: NWA 5549 Observed fall: No Year found: 2008 Country: (Northwest Africa) Mass:  12 kg | ||||||||||||||||||||
| Classification history: |
This is 1 of 123 approved meteorites classified as Iron, IAB-MG. [show all] Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites | ||||||||||||||||||||
| Comments: | Approved 21 Sep 2010 | ||||||||||||||||||||
| Writeup |
Writeup from MB 99:
Northwest Africa 5549 (NWA 5549) (Northwest Africa) Found: unknown Classification: Iron meteorite (IAB-MG) Petrography: UCLA samples from two masses; in these and in web photos, silicates are common. We examined two sides of a slice with total area 25 cm2. Silicate abundance ~15 vol%, troilite ~1.5 vol%. Kamacite lengths only ~1.5x widths, making width determination uncertain; best estimate 1.6±0.3 mm. Neumann lines abundant. Some silicates contain abundant small metal grains. A few large (3x4 mm) kamacite lamellae with incompletely resorbed taenite. Geochemistry: Co (mg/g) 4.55, Ni (mg/g) 68.8, Ga (µg/g) 81.6, Ge (µg/g) 370, As (µg/g) 4.1, Ir (µg/g) 4.1, Au (µg/g) 1.49. Submitter: J. T. Wasson, UCLA. | ||||||||||||||||||||
| Data from: MB99 Table 0 Line 0: |
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| Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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| Photos: |
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| Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||
| Crosslinks: |
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| Also see: |
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| Revision history: |
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