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Northwest Africa 7942
Basic information Name: Northwest Africa 7942
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7942
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 608 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  CV3
Recommended:  CV3    [explanation]

This is 1 of 514 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 18 Nov 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7942 (NWA 7942)

(Northwest Africa)

Purchased: 2012 Sep

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Gary Fujihara from a Moroccan dealer in September 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly closely-packed, medium to large (0.8-2.8 mm), irregularly shaped, granular chondrules plus fairly large irregularly shaped CAI in a deep brown, fine-grained matrix. Olivine, orthopyroxene, pigeonite, Al-Ti-diopside in CAI with gehlenite, spinel and perovskite.

Geochemistry: Olivine (Fa0.5-35.8, n = 3), orthopyroxene (Fs0.5-3.1Wo0.9-1.0), pigeonite (Fs1.0Wo14.4), Al-Ti-diopside in CAI (Fs0.7Wo53.1).

Classification: Carbonaceous chondrite (CV3).

Specimens: 20.1 g and one polished thin section are at UWB. The remainder is held by Mr. G. Fujihara.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012 Sep
Mass (g):608
Pieces:5
Class:CV3
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):0.5-35.8 (n=3)
Ferrosilite (mol%):0.5-3.1
Wollastonite (mol%):0.9-1.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF13-5; 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. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Carlos Di Pietro Bella   
Edward Krikorian   
METEORITICON   
Michael S. Scherman   
Public domain photographs:
Gary Fujihara      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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