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Northwest Africa 7131
Basic information Name: Northwest Africa 7131
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7131
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 40 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  CM2
Recommended:  CM2    [explanation]

This is 1 of 533 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 22 Aug 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7131 (NWA 7131)

(Northwest Africa)

Purchased: 2011 Oct

Classification: Carbonaceous chondrite (CM2)

History: Purchased by Gary Fujihara from a Morocco dealer in 2011 October.

Petrography: Small chondrules and angular mineral fragments in an orange-brown matrix containing finely intergrown cronstedtite, tochilinite and tiny sulfide grains.

Geochemistry: Olivine (Fa0.6-50.0, Cr2O3 in ferroan olivine = 0.25-0.41 wt.%), orthopyroxene (Fs0.8-9.8Wo3.5-0.3), clinopyroxene (Fs0.7Wo35.2).

Classification: Carbonaceous chondrite (CM2).

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2011 Oct
Mass (g):40
Pieces:1
Class:CM2
Shock stage:S2
Weathering grade:low
Fayalite (mol%):0.6-50.0
Ferrosilite (mol%):0.8-9.8
Wollastonite (mol%):3.5-0.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):8
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF11-19; 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. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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