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Northwest Africa 12439
Basic information Name: Northwest Africa 12439
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12439
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 65.9 g
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 9639 approved meteorites (plus 16 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 26 Jan 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12439 (NWA 12439)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (H5)

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) Sparse chondrules occur within a recrystallized matrix containing stained metal.

Geochemistry: Olivine (Fa18.6-18.8, N = 3), orthopyroxene (Fs16.6-16.9Wo1.2-1.3, N = 2), clinopyroxene (Fs6.1-7.7Wo45.0-41.5, N = 2).

Classification: Ordinary chondrite (H5).

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

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):65.94
Pieces:1
Class:H5
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):18.6-18.8
Ferrosilite (mol%):16.6-16.9
Wollastonite (mol%):1.2-1.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):65.94
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18034; 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. 108, in preparation (2019)
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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