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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 409 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8394 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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