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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:help 80.3 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 441 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Dec 2012
Writeuphelp
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 (Fs58.3-59.6Wo7.1-6.0, FeO/MnO = 31-32), high-Ca pyroxene exsolution lamellae (Fs30.0-30.3Wo41.6-40.5, 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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:
CreditPhotos
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 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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