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Northwest Africa 11303
Basic information Name: Northwest Africa 11303
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11303
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 6 kg
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 157 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 24 Feb 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11303 (NWA 11303)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Lunar meteorite (feldspathic breccia)

History: Material excavated from a site near Tindouf, Algeria, was purchased by Dustin Dickens in March 2017 from a Mauritanian dealer. The coordinates of the site are unknown.

Physical characteristics: Many small fragments coated by pale reddish-brown terrestrial weathering products. The fresh interiors of the largest fragments exhibit white to beige clasts in a dark gray, fine-grained matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral grains of anorthite, olivine, orthopyroxene, exsolved pigeonite, ferroan pigeonite, augite, ilmenite, Ti-chromite and fayalite in a partly vesicular matrix containing minor kamacite and barite.

Geochemistry: Olivine (Fa26.7-47.2, FeO/MnO = 75-81, N = 2), orthopyroxene (Fs24.1Wo3.6, FeO/MnO = 67), orthopyroxene host (Fs47.1Wo3.3, FeO/MnO = 68), ferroan pigeonite (Fs52.4Wo18.8, FeO/MnO = 67), augite (Fs8.0Wo44.3, FeO/MnO = 35), plagioclase (An96.7-97.4Or0.2-0.1, N = 2).

Classification: Lunar (feldspathic regolith breccia).

Specimens: 20.0 g including one polished endcut at UWB; remainder with Mr. D. Dickens.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2017 Mar
Mass (g):6000
Pieces:several
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):26.7-47.2
Ferrosilite (mol%):24.1; 52.4; 8.0
Wollastonite (mol%):3.6; 18.8; 44.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.0
Type spec location:UWB
Main mass:D. Dickens
Comments:Work name DD17-10; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6461 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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