Meteoritical Bulletin: Entry for Northwest Africa 6869

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Northwest Africa 6869

Basic information

Name: Northwest Africa 6869
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6869
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass: 119 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	H3.9
Recommended:			H3.9 [explanation]

This is 1 of 44 approved meteorites classified as H3.9. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 6 Sep 2013

Writeup

Writeup from MB 102:

Northwest Africa 6869 (NWA 6869)

Northwest Africa

Purchased: 2009 Jun

Classification: Ordinary chondrite (H3.9)

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, small (to 0.55 mm) chondrules in a sparse, fine-grained, dark matrix. Minerals are olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, kamacite and troilite.

Geochemistry: Olivine (Fa_16.7-18.5, Cr₂O₃ in ferroan olivine < 0.02 wt.%), orthopyroxene (Fs_8.5-23.1Wo_0.1-2.9, Fs_44.5Wo_3.5), clinopyroxene (Fs_17.2-19.5Wo_36.7-36.3).

Classification: Ordinary chondrite (H3.9). Subtype estimated to be 3.9 based on undetectable Cr₂O₃ in ferroan olivine, fine-grained matrix, and narrow range in Fa.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Taliouine
Date:	P 2009 Jun
Mass (g):	119
Pieces:	1
Class:	H3.9
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	16.7-18.5
Ferrosilite (mol%):	8.5-23.1
Wollastonite (mol%):	0.1-2.9
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.3
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH11-2; 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)
Aeroliths Collection Theodossiou

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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