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Northwest Africa 12322
Basic information Name: Northwest Africa 12322
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12322
Observed fall: No
Year found: 2018
Country: Niger
Mass:help 35.3 kg
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  CV3
Recommended:  CV3    [explanation]

This is 1 of 565 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 14 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12322 (NWA 12322)

Niger

Purchased: 2018 Aug

Classification: Carbonaceous chondrite (CV3)

History: Found in Niger and purchased in Morocco by Adam Aaronson in August 2018.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed granular and BO chondrules (some composite; apparent diameter 1250 ± 690 µm) and fine grained CAI (some up to 4.5 mm across) are set in a fine grained matrix (~30 vol.%, orange-brown in thin section).

Geochemistry: Olivine (Fa0.2-45.3, N = 3), orthopyroxene (Fs0.7-0.9Wo1.1, N = 2), clinopyroxene (Fs2.5Wo36.0; Fs21.4Wo44.1; N = 2).

Classification: Carbonaceous chondrite (CV3).

Specimens: 42 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2018 Aug
Mass (g):35300
Pieces:2
Class:CV3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):0.2-45.3
Ferrosilite (mol%):0.7-0.9; 2.5
Wollastonite (mol%):1.1; 36.0
Classifier:A. Irving & P. Carpenter
Type spec mass (g):42
Type spec location:UWB
Main mass:A. Aaronson
Comments:Work name M2169; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
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Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 74 approved meteorites from Niger (plus 3 unapproved names)

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