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Northwest Africa 12453
Basic information Name: Northwest Africa 12453
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12453
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 416 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 677 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 27 Mar 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12453 (NWA 12453)

(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 690±250 µm, N = 21) are set in a finer grained matrix containing stained metal, merrillite and chlorapatite. Several small L5 and L6 clasts were observed in the studied thin section.

Geochemistry: Olivine (Fa7.8-25.3, Cr2O3 < 0.03 wt.%, N = 6), orthopyroxene (Fs3.2-20.4Wo0.6-1.6, N = 3), clinopyroxene (Fs7.0-7.2Wo45.4-45.3, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.75.

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):416
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):19.3±7.9 (n=6)
Ferrosilite (mol%):10.6±8.8 (n=3)
Wollastonite (mol%):1.0±0.6
Magnetic suscept.:4.75
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):416
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18040; 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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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