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Northwest Africa 7262
Basic information Name: Northwest Africa 7262
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7262
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 413 g
Meteoritical Bulletin:  MB 101  (2012)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 323 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 30 Oct 2012
Writeup from MB 101:

Northwest Africa 7262 (NWA 7262)

(Northwest Africa)

Purchased: 2012 Feb

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Adam Aaronson in Temara, Morocco, in 2012 February.

Physical characteristics: A single stone (413 g) broken naturally into five pieces that fit together. Abundant white clasts visible through the pale, translucent fusion crust.

Petrography: (A. Irving and S. Kuehner, UWS; A. Greshake, MNB). Felsic fragmental breccia composed of feldspar-rich clasts in a very fine grained matrix. Minerals are olivine, orthopyroxene, pigeonite, subcalcic augite, anorthite, silica, fayalite, Ti-chromite, troilite and minor kamacite (as irregular scraps).

Geochemistry: Olivine (Fa6.8-52.6, FeO/MnO = 72-127), orthopyroxene (Fs28.6-45.6Wo3.8-4.2, FeO/MnO = 53-64), subcalcic augite (Fs25.4Wo34.3, FeO/MnO = 50), augite (Fs17.1Wo41.6, FeO/MnO = 65), plagioclase (An93.3-96.3Or0.1). Bulk composition (R. Korotev, WUSL): mean values from INAA of subsamples are 3.1 wt.% FeO, 5.7 ppm Sc, 70 ppm Ni, 1.3 ppm La, 0.58 ppm Sm, 0.77 ppm Eu, 0.47 ppm Yb, 0.22 ppm Th.

Classification: Lunar (feldspathic breccia). This specimen is very similar in appearance, mineralogy and bulk composition to NWA 2998, and it is likely that these are paired.

Specimens: A total of 20.3 g of material and one polished thin section are on deposit at UWB. The remaining material is held by Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2012 Feb
Mass (g):413
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):6.8-52.6
Ferrosilite (mol%):28.6-45.6; 25.4; 17.1
Wollastonite (mol%):3.8-4.2; 34.3; 41.6
Classifier:A. Irving, S. Kuehner, UWS, and A. Greshake, MNB
Type spec mass (g):20.3
Type spec location:UWB
Main mass:A. Aaronson
Comments:Submitted by A. Irving
   and collections
MNB: Museum f├╝r Naturkunde, Invalidenstra├če 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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     This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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