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Northwest Africa 1878
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:help 42 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Mesosiderite-B
MetBase:  v. 7.1  (2006)  Mesosiderite-B
Recommended:  Mesosiderite-B    [explanation]

This is 1 of 6 approved meteorites classified as Mesosiderite-B.   [show all]
Search for other: Class B mesosiderites, Mesosiderites, and Metal-rich meteorites
Writeuphelp
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:
Date:P 2000
Mass (g):42
Pieces:1
Class:Mes
Classifier:A. Greshake, MNB and M. Kurz
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards      
Mike Farmer   
Pierre-Marie Pelé   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Jim K   
Mirko Graul      
Woreczko Jan & Wadi   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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