Meteoritical Bulletin: Entry for Northwest Africa 7315

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Northwest Africa 7315

Basic information

Name: Northwest Africa 7315
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7315
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 80.3 g

Classification
history:

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

This is 1 of 616 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 18 Dec 2012

Writeup

Writeup from MB 101:

Northwest Africa 7315 (NWA 7315)

(Northwest Africa)

Purchased: 2012 Feb

Classification: HED achondrite (Eucrite)

History: Purchased by F. Kuntz in Febraury 2012 from a dealer in Agadir, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Very fresh monomict eucrite breccia composed of sparse basaltic eucrite clasts in a matrix of related crystal debris. Exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, chromite, troilite and rare slightly stained metal.

Geochemistry: Low-Ca pyroxene host (Fs_58.3-59.6Wo_7.1-6.0, FeO/MnO = 31-32), high-Ca pyroxene exsolution lamellae (Fs_30.0-30.3Wo_41.6-40.5, FeO/MnO = 30-31).

Classification: Eucrite, monomict

Specimens: 16.3 g of type material and one polished thin section are on deposit at UWB. The remaining material is held by Kuntz.

Data from:
  MB101
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2012 Feb
Mass (g):	80.3
Pieces:	1
Class:	Eucrite
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	58.3-59.6; 30.0-30.3
Wollastonite (mol%):	7.1-6.0; 41.6-40.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	16.3
Type spec location:	UWB
Main mass:	F. Kuntz
Comments:	K186; 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

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Franco Vignato
Michael S. Scherman
The Wilcox Collection of Meteorites

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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