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Northwest Africa 7521
Basic information Name: Northwest Africa 7521
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7521
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 610 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L6-melt breccia
Recommended:  L6-melt breccia    [explanation]

This is 1 of 48 approved meteorites classified as L6-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Sep 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7521 (NWA 7521)

(Northwest Africa)

Purchased: 2010 Feb

Classification: Ordinary chondrite (L6, melt breccia)

History: Purchased by Matthew Matthew in February 2010 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: Sparse, small L6 chondrite clasts (containing rare chondrules) are present in a dominant, almost opaque matrix rich in dispersed irregular grains of altered metal. Olivine, orthopyroxene, sodic plagioclase, chromite, altered kamacite and troilite.

Geochemistry: Olivine (Fa23.3-23.5), orthopyroxene (Fs19.5-19.6Wo1.8-1.6).

Classification: Ordinary chondrite (L6-melt breccia).

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2010 Feb
Mass (g):610
Pieces:1
Class:L6-melt breccia
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):23.3-23.5
Ferrosilite (mol%):19.5-19.6
Wollastonite (mol%):1.8-1.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.5
Type spec location:UWB
Main mass:M. Martin
Comments:MM12-3; 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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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