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Northwest Africa 12945
Basic information Name: Northwest Africa 12945
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12945
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 554 g
Classification
  history:
Recommended:  EH6    [explanation]

This is 1 of 7 approved meteorites classified as EH6.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 7 Nov 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12945 (NWA 12945)

(Northwest Africa)

Purchased: 2019 Sep

Classification: Enstatite chondrite (EH6)

History: Purchased by Fabien Kuntz in September 2019 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Recrystallized aggregate of enstatite and subordinate sodic feldspar with accessory altered kamacite, troilite (some Cr- and Mn-bearing), niningerite and schreibersite. No chondrules are apparent.

Geochemistry: Enstatite (Fs1.3±0.8Wo1.5±0.1 (range Fs0.4-2.4Wo1.4-1.6, N = 3), plagioclase (Ab80.6-82.2An14.0-14.6Or3.8-4.7, N = 3), kamacite (Si = 2.6-3.3 wt.%).

Classification: Enstatite chondrite (EH6).

Specimens: 22.54 g including one polished thin section at UWB; remainder with Kuntz.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2019 Sep
Mass (g):554
Pieces:1
Class:EH6
Shock stage:low
Weathering grade:W2
Ferrosilite (mol%):1.3±0.8
Wollastonite (mol%):1.5±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.54
Type spec location:UWB
Main mass:F. Kuntz
Comments:Work names ZS-A3 and K439; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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