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| Northwest Africa 1879 | |||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 1879 This is an OFFICIAL meteorite name. Abbreviation: NWA 1879 Observed fall: No Year found: 2003 Country: (Northwest Africa) Mass:  1624 g | ||||||||||||||||||||||
| Classification history: |
This is 1 of 9 approved meteorites classified as Mesosiderite-C. [show all] Search for other: Class C mesosiderites, Mesosiderites, and Metal-rich meteorites | ||||||||||||||||||||||
| Writeup |
Writeup from MB 88:
Northwest Africa 1879 Morocco Purchased 2003 June Mesosiderite Two very fresh, complete, crusted specimens (total weight 1624 g) were purchased from a dealer in Erfoud for A. and G. Hupé (xHupé) in 2003 June. Classification and mineralogy (A. Irving and S. Kuehner, UWS): Mostly medium grained, relatively homogeneous assemblage of orthopyroxene (45%), plagioclase (15%), metal (20%), troilite (12%), chromite (8%) and accessory merrillite, with an unbrecciated, plutonic igneous texture. The two-phase Fe-Ni metal grains consist of rounded regions of taenite (30 wt.% Ni) within kamacite (5 wt.% Ni). Compositions of orthopyroxene (Fs29.8-31.0Wo3.1-3.5, FeO/MnO = 26.9-30.3) and plagioclase (An89.7-90.5Or0.3-0.6) are typical for mesosiderites, despite the lack of brecciation in this sample. Both this sample and NWA 1827 appear to be part of a much larger, heterogeneous mesosiderite meteorite under study by A. Jambon (UPVI) and T. Bunch (NAU). Specimens: type specimens, 22 g and one polished thin section, UWS; 7 g and one polished thin section, NAU; main mass, xHupé. | ||||||||||||||||||||||
| Data from: MB88 Table 4 Line 46: |
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| Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) UPVI: Université Pierre et Marie Curie (Paris VI),Case 110, 4 Place Jussieu, 75005 Paris, France (institutional address; updated 5 Oct 2014) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) xHupé: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address) |
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| References: | Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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| Photos: |
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| Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) | ||||||||||||||||||||||