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Northwest Africa 11322
Basic information Name: Northwest Africa 11322
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11322
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 130.6 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CM1/2
Recommended:  CM1/2    [explanation]

This is 1 of 25 approved meteorites classified as CM1/2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Comments: Approved 14 Jul 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11322 (NWA 11322)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Carbonaceous chondrite (CM1/2)

History: Purchased by Ben Hoefnagels in March 2017 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Very small serpentinized chondrules (apparent diameter 300±200 μm, N = 12), sparse olivine-bearing chondrules, angular olivine fragments and some fine grained CAI occur in an indeterminate, extremely fine grained matrix (black in thin section). No pyroxene was found despite a careful search, but rare grains of pentlandite and calcite were identified.

Geochemistry: Olivine (Fa0.5-4.3, N = 3).

Classification: Carbonaceous chondrite (CM1/2).

Specimens: 20.3 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017 Mar
Mass (g):130.6
Pieces:many
Class:CM1/2
Shock stage:S2
Weathering grade:low
Fayalite (mol%):0.5-4.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.3
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name BH047; 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 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
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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