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Northwest Africa 3160
Basic information Name: Northwest Africa 3160
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3160
Observed fall: No
Year found: 2005
Country: Morocco
Mass:help 34 g
Meteoritical Bulletin:  MB 90  (2006)  Lunar (mare basalt breccia)
Recommended:  Lunar (bas. breccia)    [explanation]

This is 1 of 21 approved meteorites classified as Lunar (bas. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 16 Jan 2006
Revised 3 Feb 2006: Revised writeup
Writeup from MB 90:

Northwest Africa 3160


Find: July 2005

Achondrite (lunar, mare basalt breccia)

History: In July 2005, A. and G. Hupé purchased three broken stones with a total weight of 34 g from a Moroccan dealer in Erfoud, Morocco.

Physical Characteristics: The largest stone (28 g) has a partial thin weathered fusion crust.

Petrography: (R. Zeigler and R. Korotev, WUSL; A. Irving and S. Kuehner, UWS) The large specimen consists almost entirely of a fine-grained, olivine-phyric basalt clast with minor attached breccia matrix and appears to be part of a larger, coarse-grained, polygenic breccia. The two small stones are pieces of the breccia. The basalt contains phenocrysts of euhedral to subhedral olivine (~0.1–0.9 mm) and minor chromite (<0.1 mm).

Geochemistry: Olivine phenocrysts are zoned, with cores typically Fo55–70 and rims extending to ~Fo40 with FeO/MnO ratios of 91–105. The groundmass has spinifex olivine (Fo29) and skeletal pyroxene (En37–39Wo11–13; FeO/MnO = 71–75) set in a fine-grained matrix of pyroxene (En35–39Wo20–23), olivine (~Fo22), and glass. The breccia lithology is a fragmental breccia consisting primarily of olivine (Fo6–82) and pyroxene (En1–68Wo9–39Fs16–83), with minor amounts of plagioclase (An82–97) and trace silica; hedenbergite-fayalite-silica symplectite (after former pyroxferroite), and Fe-Ti-Cr oxides.

Classification: Achondrite (lunar, mare basalt breccia). Note: These samples may be paired with NWA 2727.

Specimens: A 4.8 g type specimen and one polished thin section are on deposit at UWS. A 2.1 g specimen is on deposit at WUSL. AHupé holds the main mass.

Data from:
  Table 2
  Line 193:
Place of purchase:Erfoud, Morocco
Date:Jul 2005
Mass (g):34
Type spec mass (g):4.8
Comments:Paired with NWA 2727
   and collections
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)
AHupé: Adam C. Hupé, 2807 China Cove, Laughlin, NV 89029, United States; Website (private address; updated 29 Jun 2013)
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
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     This is 1 of 2003 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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