Meteoritical Bulletin: Entry for Northwest Africa 7038

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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: 268 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	L3.5
Recommended:			L3.5 [explanation]

This is 1 of 98 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

Writeup

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 (Fa_2.1-41.6; Cr₂O₃ in ferroan olivines = 0.06-0.15 wt.%, mean 0.10, s.d. 0.04, N = 7), orthopyroxene (Fs_3.5-23.7Wo_0.5-1.3) , clinopyroxene (Fs_4.9Wo_45.8; Fs_18.8Wo_39.4).

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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
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

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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