Meteoritical Bulletin: Entry for Northwest Africa 7006

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Northwest Africa 7006

Basic information

Name: Northwest Africa 7006
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7006
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 335 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	CO3
Recommended:			CO3 [explanation]

This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 6 Sep 2013

Writeup

Writeup from MB 102:

Northwest Africa 7006 (NWA 7006)

Northwest Africa

Purchased: 2011 Sep

Classification: Carbonaceous chondrite (CO3)

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed small (most below 0.3 mm) chondrules, olivine and orthopyroxene mineral fragments and rare CAI in a reddish-brown matrix containing minor clinopyroxene, kamacite and troilite.

Geochemistry: Olivine (Fa_0.4-38.6; Cr₂O₃ contents in ferroan olivine 0.02-0.04 wt.%, mean 0.03, s.d. 0.01, N = 5 ), orthopyroxene (Fs_4.2-5.7Wo_0.8-0.4), clinopyroxene (Fs_1.4Wo_37.0; Fs_1.0Wo_42.6).

Classification: Carbonaceous chondrite (CO3.6). Subtype estimated to be 3.6 based on Cr₂O₃ range in ferroan olivine. Estimation of subtype based on histograms (Fig. 5) 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:	Taliouine
Date:	P 2011 Sep
Mass (g):	335
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	0.4-38.6, n=7
Ferrosilite (mol%):	4.2-5.7
Wollastonite (mol%):	0.8-0.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	30.6
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH11-7; 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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Kenneth Alvarez Castillo

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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