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Northwest Africa 13450
Basic information Name: Northwest Africa 13450
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13450
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 629 g
Classification
  history:
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 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13450 (NWA 13450)

Algeria

Purchased: 2020 Jun

Classification: Lunar meteorite (feldspathic breccia)

History: Purportedly found in Algeria and purchased in Tindouf, Algeria in June 2020. David Lehman is the American agent for the owners.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of mineral clasts of anorthite, olivine, low-Ca pyroxene and augite, plus sparse anorthositic lithic clasts, in a finer grained matrix containing ilmenite, chromite (with variable Ti content), troilite and rare metal (with kamacitic and taenitic subdomains).

Geochemistry: Olivine (Fa42.6-55.8, FeO/MnO = 87-98, N = 5), low-Ca pyroxene (Fs36.0-52.8Wo2.2-4.6, FeO/MnO = 56-58, N = 3), augite (Fs14.5-25.1Wo39.9-43.5, FeO/MnO = 40-58, N = 3), anorthite (An96.3-97.9Or0.1, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 24.0 g including a polished mount at UWB; remainder with Mr. D. Lehman.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Tindouf
Date:P 2020 Jun
Mass (g):629
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):42.6-55.8
Ferrosilite (mol%):36.0-52.8; 14.5-25.1
Wollastonite (mol%):2.2-4.6; 39.9-43.5
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):24.0
Type spec location:UWB
Main mass:D. Lehman
Comments:Work name DL 1030; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1315 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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