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Northwest Africa 8138
Basic information Name: Northwest Africa 8138
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8138
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 67.8 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  H6
Recommended:  H6    [explanation]

This is 1 of 5780 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Feb 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8138 (NWA 8138)

(Northwest Africa)

Purchased: 2013 Apr

Classification: Ordinary chondrite (H6)

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

Petrography: (A. Irving and S. Kuehner, UWS) Relatively fresh specimen containing sparse remnant chondrules and stained, holly-leaf shaped metal grains in a coarse recrystallized matrix. Minerals are olivine, orthopyroxene, augite, sodic plagioclase, chromite, kamacite and troilite.

Geochemistry: Olivine (Fa18.3-18.4), orthopyroxene (Fs16.0-16.4Wo1.7-1.8), augite (Fs5.5-5.8Wo45.9-46.0).

Classification: Ordinary chondrite (H6).

Specimens: 14.02 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):67.8
Pieces:1
Class:H6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):18.3-18.4
Ferrosilite (mol%):16.0-16.4
Wollastonite (mol%):1.7-1.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):14.02
Type spec location:PSF
Main mass:F. Kuntz
Comments:K200; 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 6781 approved meteorites from (Northwest Africa) (plus 2061 unapproved names)

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