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Northwest Africa 12446
Basic information Name: Northwest Africa 12446
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12446
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 118.6 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 653 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 26 Jan 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12446 (NWA 12446)

(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) Composed of well-formed chondrules (apparent diameter 750 ± 290 µm, N = 22) set in a somewhat recrystallized matrix containing stained metal. One Type 5 lithic clast containing sparse chondrules in a recrystallized matrix is present in the studied thin section.

Geochemistry: Olivine (Fa0.6-24.7, Cr2O3 <0.03 wt.%, N = 5), orthopyroxene (Fs1.8-20.9Wo0.5-1.9, N = 2), clinopyroxene (Fs0.7-10.9Wo37.4-37.7, N = 2).

Classification: Ordinary chondrite (L3).

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):118.6
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):0.6-24.7
Ferrosilite (mol%):1.8-20.9
Wollastonite (mol%):0.5-1.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):118.6
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18037; 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 6631 approved meteorites from (Northwest Africa) (plus 2036 unapproved names)

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