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Northwest Africa 7004
Basic information Name: Northwest Africa 7004
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7004
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 142 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H4
Recommended:  H4    [explanation]

This is 1 of 6033 approved meteorites (plus 11 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Feb 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 7004 (NWA 7004)

(Northwest Africa)

Purchased: Sept 2011

Classification: Ordinary chondrite (H4)

Petrography: Well-formed, small chondrules. Composed of olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite and altered kamacite.

Geochemistry: Olivine (Fa18.3-18.6), orthopyroxene (Fs15.8±0.0Wo1.3-2.5) , clinopyroxene (Fs5.7-6.4Wo45.9-44.5).

Data from:
  MB100
  Table 1
  Line 1568:
Place of purchase:Temara
Date:P Sept 2011
Mass (g):142
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):18.3-18.6
Ferrosilite (mol%):15.8±0.0
Wollastonite (mol%):1.3-2.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.2
Type spec location:UWS
Main mass:Aaronson
Comments: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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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