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Northwest Africa 8411
Basic information Name: Northwest Africa 8411
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8411
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 982 g
Meteoritical Bulletin:  MB 103  (2014)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 427 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 25 Nov 2014
Writeup from MB 103:

Northwest Africa 8411 (NWA 8411)

(Northwest Africa)

Purchased: 2013 Jun

Classification: HED achondrite (Howardite)

History: Purchased in June 2013 by Marc Jost from a Moroccan dealer at the Ensisheim Show.

Petrography: (A. Irving and S. Kuehner, UWS) Fresh fragmental breccia composed of clasts of gabbroic eucrite, minor fine grained, recrystallized basaltic eucrite, large grains of diogenitic orthopyroxene (~12 vol.%, of varying composition) and related crystalline debris. Minerals are calcic plagioclase, orthopyroxene, ferroan low-Ca pyroxene, augite, Ti-poor chromite and troilite.

Geochemistry: Orthopyroxene (Fs14.9-15.9Wo0.4-0.5, FeO/MnO = 28-32, N = 2; Fs21.7Wo1.5, FeO/MnO = 27), ferroan low-Ca pyroxene (Fs52.8Wo3.4; FeO/MnO = 33), augite (Fs26.9Wo40.0, FeO/MnO = 30; Fs32.7Wo41.6, FeO/MnO = 31), olivine (Fa45.1-48.1; FeO/MnO = 46-47, N = 2).

Classification: Howardite.

Specimens: 26.1 g including one polished thin section at UWB. The remainder is held by SJS.

Data from:
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2013 Jun
Mass (g):982
Shock stage:low
Weathering grade:low
Fayalite (mol%):45.1-48.1
Ferrosilite (mol%):14.9-15.9; 26.9-32.7
Wollastonite (mol%):0.4-0.5; 40.0-41.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):26.1
Type spec location:UWB
Main mass:M. Jost
Comments:SJS 13006; 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)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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