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Northwest Africa 11028
Basic information Name: Northwest Africa 11028
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11028
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 188.2 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CO3
Recommended:  CO3    [explanation]

This is 1 of 506 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 26 Jan 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11028 (NWA 11028)

(Northwest Africa)

Purchased: 2016 Jun

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Fabien Kuntz in June 2016 from a dealer in Tan Tan, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, small chondrules (apparent diameter 250±150 μm) together with angular mineral grains and sparse, small CAI and AOA are set in a fine grained matrix (~30 vol.%, deep reddish-brown in thin section).

Geochemistry: Olivine (Fa0.4-73.1, Cr2O3 in ferroan examples 0.10-0.56 wt.%, mean 0.19±0.18 wt.%, N = 7), orthopyroxene (Fs0.9Wo1.7; Fs59.5Wo4.2; N = 2), clinopyroxene (Fs2.3Wo44.2; Fs4.6Wo35.6).

Classification: Carbonaceous chondrite (CO3).

Specimens: 21.06 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Tan Tan
Date:P 2016 Jun
Mass (g):188.2
Pieces:1
Class:CO3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):0.4-73.1
Ferrosilite (mol%):0.9-59.5
Wollastonite (mol%):1.7-4.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.06
Type spec location:PSF
Main mass:F. Kuntz
Comments:K307; submitted by A. Irving
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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6624 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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