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Northwest Africa 7503
Basic information Name: Northwest Africa 7503
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7503
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 572 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L5-6
Recommended:  L5-6    [explanation]

This is 1 of 61 approved meteorites classified as L5-6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Jan 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7503 (NWA 7503)

(Northwest Africa)

Purchased: 2012 Feb

Classification: Ordinary chondrite (L5-6)

History: Purchased by Matthew Matthew in February 2012 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: Breccia composed of different types of equilibrated L chondrite clasts (some with more evident chondrules than others). Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, altered kamacite and troilite.

Geochemistry: Olivine (Fa25.1-25.3), orthopyroxene (Fs20.4-21.1Wo1.4), clinopyroxene (Fs6.7-7.8Wo45.6-45.2).

Classification: Ordinary chondrite (L5-6).

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2012 Feb
Mass (g):572
Pieces:1
Class:L5-6
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):25.1-25.3
Ferrosilite (mol%):20.4-21.1
Wollastonite (mol%):1.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22
Type spec location:UWB
Main mass:MMartin
Comments:MM12-1; 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)
MMartin: P.O. Box 164, Kaaawa, HI 96730, United States; Website (private address; updated 14 Jul 2013)
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 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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