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Northwest Africa 7992
Basic information Name: Northwest Africa 7992
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7992
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 205 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H6
Recommended:  H6    [explanation]

This is 1 of 6213 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 14 Oct 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7992 (NWA 7992)

(Northwest Africa)

Purchased: 2010

Classification: Ordinary chondrite (H6)

History: Purchased by Terry Boswell in 2010 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Very sparse, small chondrules and fairly abundant altered metal. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, altered kamacite and troilite.

Geochemistry: Olivine (Fa18.8-19.2), orthopyroxene (Fs16.4-16.6Wo1.6-1.5), clinopyroxene (Fs5.2-6.2Wo46.5-41.5).

Classification: Ordinary chondrite (H6).

Specimens: 21 g and one polished thin section are at UWB. The remainder is held by Aaronson.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2010
Mass (g):205
Pieces:1
Class:H6
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):18.8-19.2
Ferrosilite (mol%):16.4-16.6
Wollastonite (mol%):1.6-1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21
Type spec location:UWB
Main mass:T. Boswell
Comments:TB13-5; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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