Meteoritical Bulletin: Entry for Northwest Africa 10976

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Northwest Africa 10976

Basic information

Name: Northwest Africa 10976
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10976
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 80 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	LL3
Recommended:			LL3 [explanation]

This is 1 of 353 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 26 Nov 2016

Writeup

Writeup from MB 105:

Northwest Africa 10976 (NWA 10976)

(Northwest Africa)

Purchased: 2016 Aug

Classification: Ordinary chondrite (LL3)

History: Puchased in Temara, Morocco by Adam Aaronson in October 2016.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, fairly closely packed chondrules (apparent diameter 600±300 μm) are set in a finer matrix containing stained metal.

Geochemistry: Olivine (Fa_7.3-50.0, Cr₂O₃ in ferroan examples 0.04-0.15 wt.%, mean 0.09±0.04 wt.%, N = 7), orthopyroxene (Fs_2.7-25.1Wo_0.3-5.0, N = 3), clinopyroxene (Fs_7.1-21.8Wo_37.5-35.7, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.53.

Classification: Ordinary chondrite (LL3).

Specimens: 20.2 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Temara
Date:	P 2016 Aug
Mass (g):	80
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	7.3-50.0
Ferrosilite (mol%):	2.7-25.1
Wollastonite (mol%):	0.3-5.0
Magnetic suscept.:	3.53
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.2
Type spec location:	UWB
Main mass:	A. Aaronson
Comments:	M1963; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)

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 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names)

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