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Northwest Africa 10263
Basic information Name: Northwest Africa 10263
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10263
Observed fall: No
Year found: 2015
Country: Mauritania
Mass:help 1015 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 178 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 3 Oct 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 10263 (NWA 10263)

Mauritania

Purchased: 2015 May

Classification: Lunar meteorite (feldspathic breccia)

History: Two identical stones found together in Mauritania were purchased by Darryl Pitt in May 2015 from a dealer in Zagora, Morocco.

Physical characteristics: No fusion crust is evident. The interior of each stone consists of white to light gray clasts set in a dark gray matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed of angular mineral clasts of anorthite, pigeonite, olivine, orthopyroxene, subcalcic augite, augite, fayalite, silica polymorph, ilmenite, kamacite, rare zircon and rare taenite in a finer grained matrix.

Geochemistry: Olivine (Fa32.6-33.8, FeO/MnO = 87-102, N = 3), orthopyroxene (Fs26.1Wo4.0, FeO/MnO = 53), pigeonite (Fs27.5-41.8Wo11.2-11.4, FeO/MnO = 55-59; Fs61.8Wo21.0, FeO/MnO = 68; N = 3), subcalcic augite (Fs41.5-51.7Wo30.9-32.6, FeO/MnO = 64, N = 2), fayalite (Fa93.6, FeO/MnO = 84), plagioclase (An93.2-94.8Or0.2-0.5, N = 3). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 11.6, Na2O 0.43; (in ppm) Sc 23.4, La 8.7, Sm 4.0, Eu 0.91, Yb 2.7, Lu 0.40, Th 1.3.

Classification: Lunar (feldspathic fragmental breccia).

Specimens: 20.65 g including one polished endcut at UWB; main mass with DPitt.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2015 May
Mass (g):1015
Pieces:2
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):32.6-33.8; 93.6
Ferrosilite (mol%):26.1; 27.5-41.8; 41.5-51.7; 61.8
Wollastonite (mol%):4.0; 11.2-11.4; 30.9-32.6; 21.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.65
Type spec location:UWB
Main mass:D. Pitt
Comments:MAC 139; submitted by A. Irving
Institutions
   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)
Catalogs:
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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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 103 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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