Meteoritical Bulletin: Entry for Northwest Africa 8676

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Northwest Africa 8676

Basic information

Name: Northwest Africa 8676
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8676
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 45 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	CO3
Recommended:			CO3 [explanation]

This is 1 of 623 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 23 Sep 2018

Writeup

Writeup from MB 107:

Northwest Africa 8676 (NWA 8676)

(Northwest Africa)

Purchased: 2014 May

Classification: Carbonaceous chondrite (CO3)

History: Purchased by John Higgins in May 2014 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Small chondrules (230±130 µm, N=20) and rare, very fine-grained CAI in a sparse, brown matrix (40 vol%) rich in ferroan olivine and containing sparse altered kamacite, taenite and troilite.

Geochemistry: Olivine (Fa_0.7-43.4; Cr₂O₃ in ferroan olivine 0.07-0.19 wt.%, N = 7), orthopyroxene (Fs_0.9-6.3Wo_0.9-4.4, N = 3), clinopyroxene (Fs_2.0-4.0Wo_47.2-45.2).

Classification: Carbonaceous chondrite (CO3).

Specimens: 9 g including one polished thin section at UWB. The remaining material is held by Mr. J. Higgins.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Laayoune
Date:	P 2014 May
Mass (g):	45
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	0.7-43.4
Ferrosilite (mol%):	0.9-6.3
Wollastonite (mol%):	0.9-4.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	9
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH14-14; 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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

Find references in NASA ADS:
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Photos:

Credit	Photos
Public domain photographs:
A. Irving

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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