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Northwest Africa 7038
Basic information Name: Northwest Africa 7038
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7038
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 268 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L3.5
Recommended:  L3.5    [explanation]

This is 1 of 95 approved meteorites classified as L3.5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 Sep 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7038 (NWA 7038)

Northwest Africa

Purchased: 2011 Nov

Classification: Ordinary chondrite (L3.5)

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, medium-sized (to 0.65 mm) chondrules. Minerals are olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite and altered kamacite.

Geochemistry: Olivine (Fa2.1-41.6; Cr2O3 in ferroan olivines = 0.06-0.15 wt.%, mean 0.10, s.d. 0.04, N = 7), orthopyroxene (Fs3.5-23.7Wo0.5-1.3) , clinopyroxene (Fs4.9Wo45.8; Fs18.8Wo39.4).

Classification: Ordinary chondrite (L3.5). Subtype estimated to be 3.5 based on Cr2O3 range in ferroan olivine. Estimation of subtype based on histograms (Fig. 4) in Grossman and Brearley (2005).

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2011 Nov
Mass (g):268
Pieces:1
Class:L3.5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):2.1-41.6, n=9
Ferrosilite (mol%):3.5-23.7
Wollastonite (mol%):0.5-1.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.5
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1297; 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 7308 approved meteorites from (Northwest Africa) (plus 1977 unapproved names)

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