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| Northwest Africa 1878 | |||||||||||||||||||
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| Basic information | Name: Northwest Africa 1878 This is an OFFICIAL meteorite name. Abbreviation: NWA 1878 Observed fall: No Year found: 2000 Country: (Northwest Africa) Mass:  42 g | ||||||||||||||||||
| Classification history: |
This is 1 of 7 approved meteorites classified as Mesosiderite-B. [show all] Search for other: Class B mesosiderites, Mesosiderites, and Metal-rich meteorites | ||||||||||||||||||
| Writeup |
Writeup from MB 88:
Northwest Africa 1878 Morocco Purchased 2003 June Mesosiderite, class B A complete, crusted stony-iron meteorite (1374 g) was purchased in Zagora by a Moroccan dealer for A. and G. Hupé (xHupé) in 2003 June. Classification and mineralogy (A. Irving and S. Kuehner, UWS): Relatively coarse grained, with an unbrecciated, plutonic igneous texture, and subequal amounts of metal and silicates. The metal regions consist of kamacite (containing 5% Ni and minor Cr) enclosing rounded grains of taenite (20% Ni). The remainder of the sample consists of low-Ca pyroxene, predominantly orthopyroxene (Fs31.0Wo2.2, FeO/MnO = 25.8) with some pigeonite (Fs31.6Wo6.3, FeO/MnO = 26.2), and lesser amounts of anorthitic plagioclase (An91.1-92.5Or0.1), chromite, a silica polymorph, merrillite, troilite and rare ilmenite. This sample appears to be paired with NWA 1817. Specimens: type specimens, 21 g and one polished thin section, UWS; 7 g and one polished thin section, NAU; main mass, xHupé. | ||||||||||||||||||
| Data from: MB88 Table 4 Line 45: |
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| Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) Kurz: M. Kurz, Schillerstrasse 7, D-34626 Neukirchen, Germany (private address) 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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| Catalogs: |
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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 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) | ||||||||||||||||||