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Northwest Africa 10546
Basic information Name: Northwest Africa 10546
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10546
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 43.4 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 27 Feb 2016
Writeup from MB 105:

Northwest Africa 10546 (NWA 10546)

(Northwest Africa)

Purchased: 2015 Nov

Classification: Lunar meteorite (feldspathic breccia)

History: Purportedly found near the border between Mauritania and Mali. Purchased by Pierre-Marie Pelé in November 2015 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed of mineral clasts of anorthite, olivine, pigeonite, augite, subcalcic augite, silica polymorph, ilmenite (with inclusions of baddeleyite), Ti-Al-chromite and rare zircon. Microbubbles are present in parts of the finer grained matrix along with minor secondary barite.

Geochemistry: Olivine (Fa23.1-39.3; Fa86.9; FeO/MnO = 83-95; N = 4), pigeonite (Fs21.7Wo13.9; Fs54.2Wo21.9; FeO/MnO = 52-65; N = 2), augite (Fs13.0Wo37.8, FeO/MnO = 39), subcalcic augite (Fs32.8Wo31.9, FeO/MnO = 49), ferroan augite (Fs51.5Wo40.5, FeO/MnO = 72), plagioclase (An90.3-93.3Or0.4-0.1, N = 2).

Classification: Lunar (feldspathic breccia).

Specimens: A 9.72 g polished endcut piece is at PSF; remainder with Mr. P. Pelé.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2015 Nov
Mass (g):43.35
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):23.1-39.3; 86.9
Ferrosilite (mol%):21.7; 13.0-32.8; 54.2; 51.5
Wollastonite (mol%):13.9; 37.8-31.9; 21.9; 40.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):9.72
Type spec location:PSF
Main mass:P. Pelé
Comments:PMP L-4A15; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 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)
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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