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Northwest Africa 11125
Basic information Name: Northwest Africa 11125
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11125
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 215 g
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 358 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Mar 2017
Writeup from MB 106:

Northwest Africa 11125 (NWA 11125)

(Northwest Africa)

Purchased: 2015 Feb

Classification: HED achondrite (Eucrite, polymict)

History: Purchased by Aras Jonikas in February 2015 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed mainly of disaggregated eucritic debris, rare grains of diogenitic orthopyroxene, and some lithic eucrite clasts. Textures in lithic clasts range from fine intersertal to diabasic to equigranular, and one example of the last variety contains shocked polycrystalline plagioclase. Minerals include anorthite, ferropigeonite, exsolved pigeonite, fayalite, silica polymorph, ilmenite, troilite, chromite and minor barite.

Geochemistry: Low-Ca pyroxene host (Fs54.5Wo7.2, FeO/MnO = 32), high-Ca pyroxene exsolution lamella (Fs28.2Wo39.8, FeO/MnO = 37); orthopyroxene host (Fs37.9Wo2.9, FeO/MnO = 23), clinopyroxene exsolution lamella (Fs16.05Wo43.3, FeO/MnO = 31); ferropigeonite (Fs80.8Wo17.1, FeO/MnO = 42), diogenitic orthopyroxene (Fs31.9Wo5.1, FeO/MnO = 30), plagioclase (An90.3-92.1Or0.6-0.3, N = 2), fayalite (Fa90.2-94.8, FeO/MnO = 41-42, N =2).

Classification: Eucrite (polymict breccia).

Specimens: 21.16 g including one polished thin section at PSF; remainder with Mr. A. Jonikas.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2015 Feb
Mass (g):215.18
Shock stage:low
Weathering grade:low
Fayalite (mol%):90.2-94.8
Ferrosilite (mol%):31.9; 80.8; 54.5; 28.2; 37.9; 16.0
Wollastonite (mol%):5.1; 17.1; 7.2; 39.8; 2.9; 43.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.26
Type spec location:PSF
Main mass:A. Jonikas
Comments:AJ16-6; 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)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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