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Northwest Africa 14421
Basic information Name: Northwest Africa 14421
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14421
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 347 g
Recommended:  LL3    [explanation]

This is 1 of 451 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 24 Dec 2021
Writeup from MB 110:

Northwest Africa 14421 (NWA 14421)

(Northwest Africa)

Purchased: 2021 Feb

Classification: Ordinary chondrite (LL3)

History: Purchased by Jason Whitcomb in February 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well formed, relatively closely packed, unequilibrated, glass-bearing chondrules (apparent diameter 940±440 µm, N = 24) are set in a dark fine grained matrix containing altered kamacite and troilite. One grain of highly aluminous Al-Ti-diopside was found. One LL7 lithic clast with triple grain junction texture and no recognizable chondrules is present in the studied thin section.

Geochemistry: Olivine (Fa21.0±15.3, range Fa0.3-45.1, N = 10), low-Ca pyroxene (Fs19.4±14.0Wo1.5±0.8, range Fs0.8-32.7Wo0.4-2.3, N = 5), Al-Ti-diopside (Fs0.7Wo46.2, Al2O3 10.4 wt.%, TiO2 1.2 wt.%), kamacite (Ni 4.7-5.6 wt.%, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.37.

Classification: Ordinary chondrite (LL3).

Specimens: 24.36 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Feb
Mass (g):346.8
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):21.0±15.3
Ferrosilite (mol%):19.4±14.0
Wollastonite (mol%):1.5±0.8
Magnetic suscept.:3.37
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):24.36
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-22; 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)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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