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Northwest Africa 10121
Basic information Name: Northwest Africa 10121
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10121
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 217 g
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 391 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 23 May 2015
Writeup from MB 104:

Northwest Africa 10121 (NWA 10121)

(Northwest Africa)

Purchased: 2015 Jan

Classification: HED achondrite (Eucrite, polymict)

History: Purchased in Temara, Morocco by Adam Aaronson in January 2015.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed mostly of angular mineral clasts, including ~5 vol.% diogenitic orthopyroxene, plus some basaltic eucrite lithic clasts. Other minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, troilite and minor merrillite.

Geochemistry: Diogenitic orthopyroxene (Fs29.8Wo4.4, FeO/MnO = 29), low-Ca pyroxene host (Fs52.8-55.8Wo5.1-5.5, FeO/MnO = 30-34, N = 3), clinopyroxene exsolution lamellae (Fs25.4-27.8Wo40.8-39.2, FeO/MnO = 30-33, N = 3).

Classification: Eucrite (polymict breccia).

Specimens: 20.2 g including one polished thin section at UWB. The remainder is held by Mr. F. Stephan.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2015 Jan
Mass (g):217
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):52.8-55.8; 25.4-27.8
Wollastonite (mol%):5.1-5.5; 40.8-39.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.2
Type spec location:UWB
Main mass:Aaronson
Comments:M1789; 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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