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Northwest Africa 11864
Basic information Name: Northwest Africa 11864
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11864
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 65.3 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1613 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 22 Jun 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11864 (NWA 11864)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (L4)

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 are set in relatively coarse grained matrix.

Geochemistry: Olivine (Fa24.8-25.1, N = 3), orthopyroxene (Fs18.9-20.6Wo1.1-0.5, N = 3), subcalcic augite (Fs18.1Wo26.7), augite (Fs10.6Wo36.3).

Classification: Ordinary chondrite (L4).

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):65.31
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):24.8-25.1
Ferrosilite (mol%):18.9-20.6
Wollastonite (mol%):1.1-0.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):65.31
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC 18011; 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, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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