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Northwest Africa 7461
Basic information Name: Northwest Africa 7461
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7461
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 1199 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  CK4
Recommended:  CK4    [explanation]

This is 1 of 112 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 30 Sep 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7461 (NWA 7461)

(Northwest Africa)

Purchased: 2012 Aug

Classification: Carbonaceous chondrite (CK4)

History: Purchased in Temara, Morocco by Adam Aaronson in August 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly fresh specimen with separated, well-developed chondrules containing grains of Cr-magnetite in a fine-grained matrix. Minerals are olivine, orthopyroxene, pigeonite, subcalcic augite, augite, intermediate plagioclase, Cr-magnetite, altered Ni-poor kamacite and pentlandite.

Geochemistry: Olivine (Fa27.8-28.1, n=3), orthopyroxene (Fs24.3Wo0.6), pigeonite (Fs16.6Wo23.2), subcalcic augite (Fs12.3Wo34.0), augite (Fs7.5Wo46.3).

Classification: Carbonaceous chondrite (CK4).

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2012 Aug
Mass (g):1199
Pieces:1
Class:CK4
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):27.8-28.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):26.8
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1413; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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