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Northwest Africa 14425
Basic information Name: Northwest Africa 14425
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14425
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 3.67 kg
Meteoritical Bulletin:  MB 111  (2023)  EH3
Recommended:  EH3    [explanation]

This is 1 of 142 approved meteorites classified as EH3.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Comments: Approved 12 Feb 2022
Writeup from MB 111:

Northwest Africa 14425 (NWA 14425)

(Northwest Africa)

Purchased: 2021 Feb

Classification: Enstatite chondrite (EH3)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Mostly relatively small enstatite-forsterite-bearing chondrules (exhibiting a wide size variation, apparent diameter 380±410 µm, N = 24) are set in a fine grained matrix containing daubreelite, troilite, altered Si-bearing kamacite, perryite, schreibersite, oldhamite and albitic glass. Several chondrules contain relatively ferroan low-Ca pyroxene.

Geochemistry: Enstatite (Fs1.3±0.9Wo0.4±0.3, range Fs0.3-4.1Wo0.0-1.0, N = 19), forsterite (Fa0.3±0.1, range Fa0.3-0.4, N = 3), relatively ferroan low-Ca pyroxene (Fs13.4±3.8Wo3.0±1.1, range Fs11.4-19.1Wo4.2-1.9, N = 4).

Classification: Enstatite chondrite (EH3). The presence of relatively ferroan low-Ca pyroxene in addition to the dominant enstatite has been previously documented in EH3 chondrite Yamato 691.

Specimens: 24.83 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):3665
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):0.3±0.1
Ferrosilite (mol%):1.3±0.9; 11.4-19.1
Wollastonite (mol%):0.4±0.3; 4.2-1.9
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):24.83
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-21; 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: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 13 Jun 2024)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Photos from the Encyclopedia of Meteorites:
Jia He Zhang   
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     This is 1 of 9806 approved meteorites from (Northwest Africa) (plus 1855 unapproved names)

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