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Northwest Africa 12214
Basic information Name: Northwest Africa 12214
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12214
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 377 g
Meteoritical Bulletin:  MB 108  (2020)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 119 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 5 Jan 2019
Writeup from MB 108:

Northwest Africa 12214 (NWA 12214)

(Northwest Africa)

Purchased: 2018 Jan

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased in Temara, Morocco by Adam Aaronson in January 2018.

Petrography: (A. Irving and S. Kuehner, UWS) Unbrecciated specimen with intersertal texture. Minerals are exsolved pigeonite (now composed of microcrystalline sub grains), plagioclase, silica polymorph, ilmenite, troilite and minor secondary calcite. Plagioclase has in part been converted to maskelynite and in part to polycrystalline plagioclase.. Cross-cutting dark shock melt veinlets are present. The plagioclase in NWA 12214 has in part been converted to isotropic maskelynite and in part to polycrystalline plagioclase

Geochemistry: Orthopyroxene host (Fs60.8-60.9Wo5.9-5.6, FeO/MnO = 31-32, N = 3), clinopyroxene exsolution lamellae (Fs29.8-30.7Wo41.8-41.3, FeO/MnO = 32, N = 2), plagioclase (An89.0-89.5Or0.5-0.7, N = 2).

Classification: Eucrite (unbrecciated, highly shocked).

Specimens: 20.9 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2018 Jan
Mass (g):377
Shock stage:high
Ferrosilite (mol%):60.8-60.9; 29.8-30.7
Wollastonite (mol%):5.9-5.6; 41.8-41.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.9
Type spec location:UWB
Main mass:Aaronson
Comments:Work name M2086; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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