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Northwest Africa 11722
Basic information Name: Northwest Africa 11722
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11722
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 7.21 kg
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L3
Recommended:  L3    [explanation]

This is 1 of 840 approved meteorites (plus 2 unapproved names) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 7 Mar 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11722 (NWA 11722)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (L3)

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by the Hollis Collection and then donated to PSF.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (apparent diameter 510±370 µm, N = 15) are set in a finer grained matrix containing altered kamacite, merrillite and taenite.

Geochemistry: Olivine (Fa6.3-43.5, Cr2O3 in ferroan examples 0.03-0.15 wt.%, mean 0.08±0.05 wt.%, N = 8), orthopyroxene (Fs2.1-19.5Wo0.3-0.4, N = 3), pigeonite (Fs3.6Wo17.1), augite (Fs7.9Wo44.7).

Classification: Ordinary chondrite (L3).

Specimens: The entire specimen including one polished thin section is at PSF.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):7210
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):6.3-43.5
Ferrosilite (mol%):2.1-19.5
Wollastonite (mol%):0.3-0.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):7210
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18001; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

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