Meteoritical Bulletin: Entry for Northwest Africa 10654

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Northwest Africa 10654

Basic information

Name: Northwest Africa 10654
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10654
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 22.9 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	CO3
Recommended:			CO3 [explanation]

This is 1 of 566 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 24 May 2016

Writeup

Writeup from MB 105:

Northwest Africa 10654 (NWA 10654)

(Northwest Africa)

Purchased: 2015 Dec

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Xavier Gonzales in December 2015 from a dealer in Agadir, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Small chondrules (apparent diameter 150±100 μm), mineral fragments and very fine grained CAI set in a dark brown matrix (~30 vol.%).

Geochemistry: Olivine (Fa_0.2-60.7; Cr₂O₃ in ferroan examples 0.26-0.36 wt.%, mean 0.31±0.03 wt.%, N = 8), orthopyroxene (Fs_1.5-14.8Wo_0.9-2.1, N = 3), clinopyroxene (Fs_1.1-1.8Wo_38.0-41.1).

Classification: Carbonaceous chondrite (CO3).

Specimens: 5.71 g including one polished thin section at PSF; remainder with Mr. X. Gonzales.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2015 Dec
Mass (g):	22.9
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	0.2-60.7
Ferrosilite (mol%):	1.5-14.8
Wollastonite (mol%):	0.9-2.1
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	5.71
Type spec location:	PSF
Main mass:	X. Gonzales
Comments:	K287; submitted by A. Irving

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7552 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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