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Northwest Africa 12196
Basic information Name: Northwest Africa 12196
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12196
Observed fall: No
Year found: 2018
Country: Western Sahara
Mass:help 226 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  CV3
Recommended:  CV3    [explanation]

This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 9 Nov 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12196 (NWA 12196)

Western Sahara

Purchased: May 2018

Classification: Carbonaceous chondrite (CV3)

History: Found near the Algerian-Western Sahara border region, January 2018. Purchased by Darryl Pitt in Mauritania, May 2018.

Physical characteristics: Single stone, weathered exterior. A saw cut reveals numerous distinct chondrules up to 3 mm in diameter and some CAIs up to 5 mm in size. Gray colored groundmass makes up about 40% of this meteorite.

Petrography: (C. Agee, UNM) Microprobe examination showed many porphyritic chondrules most of which were type I. Abundant fine grained matrix throughout.

Geochemistry: (C. Agee, UNM) Olivine Fa4.4±4.1, n=16; enstatite Fs1.1±0.3Wo0.9±0.2, n=8.

Classification: Carbonaceous chondrite (CV3)

Specimens: 21.2 g on deposit at UNM, DPitt holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P May 2018
Mass (g):226
Pieces:1
Class:CV3
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):4.4±4.1
Ferrosilite (mol%):1.1±0.3
Wollastonite (mol%):0.9±0.2
Classifier:C. Agee, UNM
Type spec mass (g):21.2
Type spec location:UNM
Main mass:Darryl Pitt
Comments:Field name MVCH-357; submitted by C. Agee, UNM
Institutions
   and collections		 UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography:

Western Sahara
Coordinates:Unknown.

Statistics:
     This is 1 of 280 approved meteorites from Western Sahara (plus 20 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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