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Northwest Africa 10073
Basic information Name: Northwest Africa 10073
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10073
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 64 g
Meteoritical Bulletin:  MB 104  (2015)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 329 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 1 May 2015
Writeup from MB 104:

Northwest Africa 10073 (NWA 10073)

(Northwest Africa)

Purchased: 2015 Jan

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased in Temara, Morocco by Adam Aaronson in January 2015.

Physical characteristics: Single stone (64 g) with a wind-ablated exterior and an interior consisting of whitish clasts (up to 8 mm) in a dark gray matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of mineral clasts of anorthite, olivine, orthopyroxene, subcalcic augite, augite, ferropigeonite, ilmenite, Al-bearing chromite, Ni-poor kamacite and troilite, together with rare glass fragments, in a finer grained matrix. Patches of shock glass are present.

Geochemistry: Olivine (Fa24.6-40.4, FeO/MnO = 88-105, N = 3), orthopyroxene (Fs11.8Wo3.0; Fs31.1-38.9Wo2.3-2.2; Fs50.7Wo2.1; FeO/MnO = 54-65, N = 3), pigeonite (Fs19.4Wo10.6, FeO/MnO = 63), ferropigeonite (Fs54.2Wo16.6, FeO/MnO = 62), titanian ferropigeonite (Fs74.6Wo14.8, FeO/MnO = 65, TiO2 = 8.4 wt.%, Al2O3 = 1.4 wt.%, Na2O = 0.18 wt.%), subcalcic augite (Fs38.0Wo27.0, FeO/MnO = 58), augite (Fs6.5Wo43.7, FeO/MnO = 39), plagioclase (An95.5-98.5Or0.2, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 3.7, Na2O 0.40; (in ppm) Sc 7.4, Ni 160, La 3.1, Sm 1.45, Eu 0.80, Yb 1.1, Lu 0.15, Hf 1.1, Th 0.57.

Classification: Lunar (feldspathic fragmental breccia).

Specimens: 12.8 g including one polished endcut at UWB. The remainder is held by Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2015 Jan
Mass (g):64
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):24.6-40.4
Ferrosilite (mol%):11.8-50.7; 19.4-54.2
Wollastonite (mol%):3.0-2.1; 10.6-16.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):12.8
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1780; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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