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Northwest Africa 8358
Basic information Name: Northwest Africa 8358
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8358
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 294 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  CO3
Recommended:  CO3    [explanation]

This is 1 of 554 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 9 Mar 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8358 (NWA 8358)

(Northwest Africa)

Purchased: 2014 Feb

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Matthew Martin in February 2014 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Separated, small chondrules together with some crystal fragments and rare fine grained CAI are set in an orange fragmental matrix. Minerals are olivine, orthopyroxene, subcalcic augite, augite, Ti-bearing chromite, pyrrhotite, pentlandite and altered kamacite.

Geochemistry: Olivine (Fa6.6-22.8, N = 3), orthopyroxene (Fs1.2-29.8Wo0.9-0.8, N = 3), subcalcic augite (Fs16.3Wo36.8), augite (Fs10.6Wo46.3).

Classification: Carbonaceous chondrite (CO3).

Specimens: 20.1 g including one polished thin section at UWB. The remaining material is held by Mr. M. Martin.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014 Feb
Mass (g):294
Pieces:4
Class:CO3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):6.6-22.8
Ferrosilite (mol%):1.2-29.8
Wollastonite (mol%):0.9-0.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:M. Martin
Comments:MM14-3; 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7377 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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