|Northwest Africa 5744|
|Basic information||Name: Northwest Africa 5744|
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5744
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass: 170 g
This is 1 of 62 approved meteorites classified as Lunar. [show all]
Search for other: Lunar meteorites
|Comments:||Approved 16 Apr 2009|
Writeup from MB 96:
Northwest Africa 5744
Find: February 2009
Achondrite (lunar, granulitic troctolitic breccia)
History: Found near Gawa, Mali, in February 2009 and purchased from a dealer by Adam Aaronson.
Physical characteristics: A single, buff-colored, rounded stone (170 g) lacking fusion crust (Fig. 2). Small white clasts are visible in a pale, finer grained matrix.
Petrography (A. Irving and S. Kuehner, UWS; T. Bunch, NAU): Recrystallized breccia composed mainly of plagioclase (up to 100 μm) with fine-grained (<50 μm) olivine, pigeonite, orthopyroxene, and accessory Ti-chromite and Ni-bearing troilite.
Geochemistry: Plagioclase (An97.9Or0.1), olivine (Fa20.7, FeO/MnO = 76.9–94.5), pigeonite (Fs16.6Wo9.7, FeO/MnO = 50).
Bulk composition (R. Korotev, WUSL): INAA on a 185 mg fragment gave FeO 5.7 wt%, Na2O 0.25 wt%; Sc 8.3, Cr 1050, La 1.1, Sm 0.47, Eu 0.58, Yb 0.42, Th 0.15, all in ppm.
Classification: Achondrite (lunar, granulitic troctolitic breccia).
Specimens: A total of 13.1 g and two polished thin sections are on deposit at UWS; a 7.1 g of sample is at NAU. The main mass is held by an anonymous collector.
NAU: Geology, Bldg 12
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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
|References:||Published in Meteoritical Bulletin, no. 96, MAPS 44, 1355-1397 (2009)|
This is 1 of 5351 approved meteorites from (Northwest Africa) (plus 2121 unapproved names)
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