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Northwest Africa 8038
Basic information Name: Northwest Africa 8038
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8038
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 652 g
Meteoritical Bulletin:  MB 102  (2013)  CO3
Recommended:  CO3    [explanation]

This is 1 of 621 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 18 Nov 2013
Writeup from MB 102:

Northwest Africa 8038 (NWA 8038)

(Northwest Africa)

Purchased: 2013 Feb

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Eric Twelker in February 2013 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Small chondrules (mostly 0.2-0.6 mm, some up to 1.5 mm) and fine-grained CAI (composed of hibonite and spinel, with rims of aluminous clinopyroxene) in a dark brown, stained matrix. Minor pentlandite occurs in the matrix.

Geochemistry: Olivine (Fa0.3-39.1; Cr2O3 in ferroan olivine 0.06-0.15 wt.%, mean 0.09 wt.%, s.d. 0.03 wt.%, N = 7), orthopyroxene (Fs1.3-8.9Wo4.3-2.8), clinopyroxene (Fs1.4Wo38.6; Fs1.3Wo48.8; Fs16.9Wo53.0).

Classification: Carbonaceous chondrite (CO3). Subtype is estimated to be 3.5 on the basis of the narrow distribution of Cr2O3 in ferroan olivine.

Specimens: 22.3 g and one polished thin section are at UWB. The remainder is held by Twelker.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2013 Feb
Mass (g):652
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):0.3-39.1 (n=9)
Ferrosilite (mol%):1.3-8.9
Wollastonite (mol%):4.3-2.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.3
Type spec location:UWB
Main mass:E. Twelker
Comments:ET13-2; submitted by A. Irving
   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)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Solar Anamnesis      

     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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