Meteoritical Bulletin: Entry for Northwest Africa 7313

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Northwest Africa 7313

Basic information

Name: Northwest Africa 7313
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7313
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 777 g

Classification
history:

Meteoritical Bulletin:	MB 101	(2012)	LL6
Recommended:			LL6 [explanation]

This is 1 of 2930 approved meteorites (plus 2 unapproved names) classified as LL6. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 28 Sep 2012

Writeup

Writeup from MB 101:

Northwest Africa 7313 (NWA 7313)

(Northwest Africa)

Purchased: 2012 Feb

Classification: Ordinary chondrite (LL6)

History: Purchased by F. Kuntz in February 2012 from a dealer in Erfoud, Morocco.

Petrography: Coarse breccia composed predominantly of recrystallized clasts containing some remnants of large chondrules. A large, rounded, finer grained clast is completely recrystallized with triple grain junctions, and contains olivine and orthopyroxene of very similar composition to the respective minerals in the chondrule-bearing clasts.

Geochemistry: Olivine (Fa_30.2±0.10), orthopyroxene (Fs_24.1-24.2Wo_1.9-2.4), clinopyroxene (Fs_9.6-9.8Wo_43.3-43.0). Recrystallized clast contains olivine (Fa_30.0-30.7) and orthopyroxene (Fs_23.7-24.5Wo_1.0-1.6).

Classification: Ordinary chondrite (LL6).

Data from:
  MB101
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2012 Feb
Mass (g):	777
Pieces:	3
Class:	LL6
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	30.2±0.10
Ferrosilite (mol%):	24.1-24.2
Wollastonite (mol%):	1.9-2.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	32.5
Type spec location:	UWB
Main mass:	F. Kuntz
Comments:	K184; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
John Lutzon
Michael S. Scherman
Nuno Chaves
The Wilcox Collection of Meteorites
Wojciech Moscinski
xeqtr

Geography:

Coordinates:

Unknown.

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

Crosslinks:

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Revision
history:

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