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Northwest Africa 12443
Basic information Name: Northwest Africa 12443
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12443
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 83 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 503 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 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12443 (NWA 12443)

(Northwest Africa)

Purchased: 2018 Jul

Classification: Carbonaceous chondrite (CV3)

History: Found by Mohamed Zergou about 26 km E of Tantan on July 25, 2018, and purchased by Mbark Arjdal.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed granular chondrules (apparent diameter 940±480 µm, N = 23) plus amoeboid fine grained CAI (one composed of wollastonite+andradite+corundum) are set in a very fine-grained matrix (~40 volume%, black in thin section). XRD of a powdered sample show the absence of phyllosilicates.

Geochemistry: Olivine (Fa26.6±25.5 (range Fa0.9-51.8), N = 3), enstatite (Fs1.4±0.1Wo2.3±2.1 (range Fs1.4-1.5Wo0.8-3.8), N = 2), diopside (Fs1.0Wo37.8).

Classification: Carbonaceous chondrite (CV3).

Specimens: 16.9 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018 Jul
Mass (g):83
Pieces:1
Class:CV3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):26.6±25.5 (n=3)
Ferrosilite (mol%):1.4±0.1 (n=2)
Wollastonite (mol%):2.3±2.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):16.9
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj18-A3; 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 Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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