Meteoritical Bulletin: Entry for Northwest Africa 11615

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Northwest Africa 11615

Basic information

Name: Northwest Africa 11615
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11615
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 3.11 kg

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	LL3
Recommended:			LL3 [explanation]

This is 1 of 352 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 22 Jan 2018

Writeup

Writeup from MB 107:

Northwest Africa 11615 (NWA 11615)

Northwest Africa

Purchased: 2017 Aug

Classification: Ordinary chondrite (LL3)

History: Purchased in Temara, Morocco by Adam Aaronson in August 2017.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, well-formed chondrules (apparent diameter 710±420 µm, N = 18) are set in a finer grained matrix containing altered kamacite.

Geochemistry: Olivine (Fa_0.7-41.7, Cr₂O₃ in ferroan examples 0.06-0.10 wt.%, mean 0.08±0.02 wt.%, N = 8), orthopyroxene (Fs_2.8-21.2Wo_0.2-3.0, N = 3), pigeonite (Fs_17.8-21.9Wo_20.9-16.2, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.73.

Classification: Ordinary chondrite (LL3).

Specimens: 32.8 g including one polished thin section at UWB; main mass with Aaronson.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Temara
Date:	P 2017 Aug
Mass (g):	3114
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	0.7-41.7
Ferrosilite (mol%):	2.8-21.2
Wollastonite (mol%):	0.2-3.0
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	32.8
Type spec location:	UWB
Main mass:	Aaronson
Comments:	Work name M2056; 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. 107, MAPS 55, 460-462

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7529 approved meteorites from (Northwest Africa) (plus 1975 unapproved names)

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