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Northwest Africa 12441
Basic information Name: Northwest Africa 12441
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12441
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 107.3 g
Meteoritical Bulletin:  MB 108  (2020)  L3
Recommended:  L3    [explanation]

This is 1 of 729 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 3 Aug 2019
Writeup from MB 108:

Northwest Africa 12441 (NWA 12441)

(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 660±420 µm, N = 21) are set in a fine-grained matrix containing altered metal.

Geochemistry: Olivine (Fa15.4±14.2 (range Fa0.6-53.1); Cr2O3 in ferroan examples 0.03-0.11 wt.%, mean 0.08±0.03 wt.%, N = 7), orthopyroxene (Fs11.3±9.2Wo0.6±0.2 (range Fs1.9-20.3Wo0.4-0.7), N = 3), pigeonite (Fs25.9Wo18.6), clinopyroxene (Fs13.8Wo40.1). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.81.

Classification: Ordinary chondrite (L3).

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

Data from:
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):107.33
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):15.4±14.2
Ferrosilite (mol%):11.3±9.2
Wollastonite (mol%):0.6±0.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):107.3
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18036; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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