Meteoritical Bulletin: Entry for Northwest Africa 13356

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Northwest Africa 13356

Basic information

Name: Northwest Africa 13356
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13356
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 396 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	LL4
Recommended:			LL4 [explanation]

This is 1 of 396 approved meteorites classified as LL4. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 4 Jul 2020

Writeup

Writeup from MB 109:

Northwest Africa 13356 (NWA 13356)

(Northwest Africa)

Purchased: 2019 Aug

Classification: Ordinary chondrite (LL4)

History: Purchased by Mbark Arjdal in August 2019 from a dealer in Timbuktu, Mali.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed chondrules with a wide range in size (apparent diameter 0.1-3.5 mm) are set in a finer grained matrix containing goethite (after kamacite), chromite and troilite.

Geochemistry: Olivine (Fa_28.6±0.3, range Fa_28.3-28.9, N = 5), low-Ca pyroxene (Fs_23.2±0.5Wo_2.5±0.2, range Fs_22.3-23.7Wo_1.5-4.5, N = 6), augite (Fs_8.8±0.5Wo_46.4±0.1, range Fs_8.4-9.1Wo_46.3-46.5, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.24.

Classification: Ordinary chondrite (LL4).

Specimens: 28.6 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Timbuktu, Mali
Date:	P 2019 Aug
Mass (g):	396
Pieces:	1
Class:	LL4
Shock stage:	S2
Weathering grade:	W3
Fayalite (mol%):	28.6±0.3
Ferrosilite (mol%):	23.2±0.5
Wollastonite (mol%):	2.5±1.2
Magnetic suscept.:	3.24
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	28.6
Type spec location:	UWB
Main mass:	M. Arjdal
Comments:	Work name Arj ZM 256; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
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. 109, in preparation (2020)

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Geography:

Coordinates:

Unknown.

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

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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