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Northwest Africa 1979
Basic information Name: Northwest Africa 1979
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1979
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 5.12 kg
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Mesosiderite-B2
MetBase:  v. 7.1  (2006)  Mesosiderite-B2
Recommended:  Mesosiderite-B2    [explanation]

This is 1 of 7 approved meteorites classified as Mesosiderite-B2.   [show all]
Search for other: Class B mesosiderites, Mesosiderites, and Metal-rich meteorites
Writeuphelp
Writeup from MB 88:

Northwest Africa 1979 

Morocco

Found 2002

Mesosiderite

A 5.12 kg single mass was purchased in Erfoud in 2003. Classification and mineralogy (T. Bunch and J. Wittke, NAU): typical B2 mesosiderite, based on 8 vol % plagioclase, with a partially recrystallized matrix. Modes (vol. %): silicate matrix, 44; metal. 33; eucritic clasts (gabbroic), 12; diogenite grains (up to 1.2 cm), 8; and sulfides, 3.  Metal grains are typically > 2 mm with a few cm-size, subrounded to irregular grains; eucrite clasts < 2 cm. Matrix pyroxene, Fs29.7Wo2 and Fe/Mn = 28.7; matrix augite, Fs13Wo43; plagioclase, An89.7. Gabbroic eucrite inverted pigeonite, Fs30.1Wo3 and Fe/Mn = 26.9; exsolved augite, Fs14.8Wo43; plagioclase, An91. Metal , Ni = 6.7 wt %, Co = 0.82 %.Not paired with NWA 1827. Weathered crust, but with very fresh interior. Specimens: 22 g, NAU, main mass, Boswell.

Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7296 approved meteorites from (Northwest Africa) (plus 1980 unapproved names)

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