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Northwest Africa 14925
Basic information Name: Northwest Africa 14925
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14925
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 879 g
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 263 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 20 Jun 2022
Writeup from MB 111:

Northwest Africa 14925 (NWA 14925)

(Northwest Africa)

Purchased: 2021 Oct

Classification: HED achondrite (Eucrite, monomict)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Monomict breccia composed of subophitic eucrite clasts plus related crystalline debris in a fine grained matrix. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, troilite, chromite and Fe metal. Some thin, dark shock veinlets are present.

Geochemistry: Low-Ca pyroxene (Fs58.8-63.1Wo1.5-5.0, FeO/MnO = 29-32, N = 10), augite (Fs27.8-28.5Wo42.1-41.5, FeO/MnO = 29-32, N = 2), plagioclase (An 89.1-90.4Or0.4-0.3, N = 4).

Classification: Eucrite (subophitic, monomict breccia).

Specimens: 23.2 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 Oct
Mass (g):879
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):58.9-63.1; 27.8-28.5
Wollastonite (mol%):1.5-5.0; 42.1-41.5
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):23.2
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-118; 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. 111, in preparation (2022)
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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