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Northwest Africa 8137
Basic information Name: Northwest Africa 8137
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8137
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 55.2 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 515 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 1 Mar 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8137 (NWA 8137)

(Northwest Africa)

Purchased: 2013 Apr

Classification: Ureilite

History: Purchased by F. Kuntz in April 2013 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular assemblage of olivine and polysynthetically twinned pigeonite; reduced margins of olivine grains are accompanied by sporadic, "blobby" patches of black, metal-rich material.

Geochemistry: Olivine (cores Fa16.1-16.2; rims Fa1.9-2.7), pigeonite (Fs13.7-14.1Wo7.4-7.5).

Classification: Ureilite.

Specimens: 11.73 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2013 Apr
Mass (g):55.2
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):16.1-16.2
Ferrosilite (mol%):13.7-14.1
Wollastonite (mol%):7.4-7.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):11.73
Type spec location:PSF
Main mass:F. Kuntz
Comments:K199; submitted by P. Sipiera
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7027 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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