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Northwest Africa 10626
Basic information Name: Northwest Africa 10626
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10626
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1849 g
Meteoritical Bulletin:  MB 105  (2016)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 291 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 30 Apr 2016
Writeup from MB 105:

Northwest Africa 10626 (NWA 10626)

(Northwest Africa)

Purchased: 2015 Nov

Classification: Lunar meteorite (feldspathic breccia)

History: Puchased by Darryl Pitt in October 2015 from a dealer in Erfoud, Morocco.

Physical characteristics: The broken, very fresh specimen (1849 g) lacks fusion crust and consists mainly of small, angular light-colored clasts in a dark gray matrix, but there also are some larger, light gray, basaltic-textured clasts (up to 3.5 cm across).

Petrography: (A. Irving and S. Kuehner, UWS) The predominant portion is a fragmental breccia consisting of mineral clasts of anorthite, pigeonite, exsolved pigeonite, sparse olivine, ilmenite and chromite plus clasts of glass with quenched crystals. One olivine-free basaltic clast has subophitic texture with domains of variable grain size, and is composed of pigeonite, anorthite, subcalcic augite, ilmenite, Ti-Al-chromite, pyrrhotite and minor Ni-free metal; mesostasis regions contain sparse vesicles.

Geochemistry: Olivine (Fa19.9; Fa54.4; FeO/MnO = 91-98, N = 2), pigeonite (Fs39.5Wo8.2; Fs36.1Wo21.4; FeO/MnO = 50-58, N = 2), plagioclase (An91.0-97.2Or0.6-0.1, N = 2), pigeonite in basalt clast (Fs44.3Wo8.1; Fs38.6Wo25.0; FeO/MnO = 50-60, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave (in wt.%) FeO 5.7, Na2O 0.34; (in ppm) Sc 12.8, Cr 990, Co 15, La 2.0, Sm 1.0, Eu 0.77, Yb 0.89, Lu 0.13, Hf 0.73, Th 0.30.

Classification: Lunar (feldspathic, basalt-bearing breccia).

Specimens: 29.47 g polished slice at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2015 Nov
Mass (g):1849
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):19.9; 54.4
Ferrosilite (mol%):39.5-44.3; Fs36.1-38.6
Wollastonite (mol%):8.2-8.1; 21.4-25.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):29.47
Type spec location:UWB
Main mass:D. Pitt
Comments:MCVICH 43; submitted by A. Irving
   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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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