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Northwest Africa 10676
Basic information Name: Northwest Africa 10676
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10676
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 442 g
Meteoritical Bulletin:  MB 105  (2016)  Diogenite-pm
Recommended:  Diogenite-pm    [explanation]

This is 1 of 50 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 2 Jul 2016
Writeup from MB 105:

Northwest Africa 10676 (NWA 10676)

(Northwest Africa)

Purchased: 2015 Oct

Classification: HED achondrite (Diogenite, polymict)

History: Purchased by Marc Jost from a Moroccan dealer in Brügg, Switzerland in October 2015.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular grains of orthopyroxene (some compositionally zoned), sparse polymineralic lithic diogenite clasts, and sparse basaltic eucrite clasts (up to 1 cm in size) within a very fine grained matrix. Accessory minerals include chromite, ilmenite, calcic plagioclase, olivine, silica polymorph and Ni-free metal.

Geochemistry: Orthopyroxene (Fs22.7-26.1Wo2.1-3.3, FeO/MnO = 28, N = 3),orthopyroxene host (Fs50.6Wo3.8, FeO/MnO = 27), clinopyroxene exsolution lamella (Fs22.9Wo41.0, FeO/MnO = 23), orthopyroxene in eucrite clast (Fs52.1Wo3.8, FeO/MnO = 27), clinopyroxene (Fs16.0Wo44.3, FeO/MnO = 24), olivine (Fa43.5, FeO/MnO = 43).

Classification: Diogenite (polymict breccia).

Specimens: 22.3 g including one polished thin section at UWB; remainder held by SJS.

Data from:
  Table 0
  Line 0:
Place of purchase:Brügg, Switzerland
Date:P 2015 Oct
Mass (g):441.8
Shock stage:low
Weathering grade:low
Fayalite (mol%):43.5
Ferrosilite (mol%):22.7-26.1; 50.6; 22.9
Wollastonite (mol%):2.1-3.3; 3.8; 41.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.3
Type spec location:UWB
Main mass:Space Jewels Switzerland
Comments:SJS 16002; 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 8024 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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