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Northwest Africa 7473
Basic information Name: Northwest Africa 7473
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7473
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 3.25 kg
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 515 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 3 Jun 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7473 (NWA 7473)

(Northwest Africa)

Purchased: 2012 Aug

Classification: Ureilite

History: Purchased in Temara, Morocco by Adam Aaronson in August 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular aggregate of olivine and pigeonite. Fine-grained metal occurs within the reduced rims of olivine grains.

Geochemistry: Olivine (cores Fa22.3-22.4; Cr2O3 = 0.75 wt.%; rims Fa7.5; Cr2O3 = 0.63 wt.%), pigeonite (Fs17.9-18.3Wo6.9-6.6).

Classification: Ureilite

Specimens: 20.4 g of sample and one polished thin section are on deposit at UWB. Aaronson holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2012 Aug
Mass (g):3254
Pieces:1
Class:Ureilite
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):22.3-22.4
Ferrosilite (mol%):17.9-18.3
Wollastonite (mol%):6.9-6.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.4
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1390; 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 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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