Meteoritical Bulletin: Entry for Northwest Africa 13107

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Northwest Africa 13107

Basic information

Name: Northwest Africa 13107
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13107
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 2.32 kg

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	LL7
Recommended:			LL7 [explanation]

This is 1 of 100 approved meteorites classified as LL7. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 9 Feb 2020

Writeup

Writeup from MB 109:

Northwest Africa 13107 (NWA 13107)

(Northwest Africa)

Purchased: 2018 Mar

Classification: Ordinary chondrite (LL7)

History: Purchased in Rissani, Morocco, by Adam Aaronson in March 2018.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Triple grain junction texture with no chondrules. Major minerals are olivine, orthopyroxene, rare high-Ca pyroxene and sodic plagioclase, together with accessory altered kamacite, chromite and chlorapatite.

Geochemistry: Olivine (Fa_27.7±0.4(range Fa_27.1-28.1, N = 5), low-Ca pyroxene (Fs_22.8±0.1Wo_2.1±0.0(range Fs_22.7-22.9Wo_2.1-2.2, N = 5), high-Ca pyroxene (Fs_9.4±0.0Wo_44.2±0.0(range Fs_9.3-9.4Wo_44.2, N = 2), plagioclase (An_38.6±0.0Or_0.5±0.0(rangeAn_38.5-38.6Or_0.5-0.6, N = 3).

Classification: Ordinary chondrite (LL7).

Specimens: 20.6 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Rissani
Date:	P 2018 Mar
Mass (g):	2320
Pieces:	1
Class:	LL7
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	27.7±0.4
Ferrosilite (mol%):	22.8±0.1
Wollastonite (mol%):	2.1±0.0
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	20.6
Type spec location:	UWB
Main mass:	A. Aaronson
Comments:	Work name M2117; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ryan Upchurch

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 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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