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Northwest Africa 11429
Basic information Name: Northwest Africa 11429
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11429
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 171.3 g
Meteoritical Bulletin:  MB 106  (2018)  Diogenite-pm
Recommended:  Diogenite-pm    [explanation]

This is 1 of 49 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 13 Oct 2017
Writeup from MB 106:

Northwest Africa 11429 (NWA 11429)

(Northwest Africa)

Purchased: 2017 Apr

Classification: HED achondrite (Diogenite, polymict)

History: Purchased by Fabien Kuntz in April 2017 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular grains of zoned orthopyroxene, olivine and sparse subophitic eucrite clasts in a fine grained matrix. Accessory minerals are silica polymorph, ilmenite, chromite, troilite and zircon.

Geochemistry: Diogenitic orthopyroxene (core Fs23.4Wo1.5; rims 31.6-32.2Wo2.1-2.2; FeO/MnO = 31-33; N = 3), eucritic orthopyroxene host (Fs56.9Wo2.4; Fs49.3Wo2.5; FeO/MnO = 27-32; N = 2), clinopyroxene exsolution lamellae (Fs24.0-27.0Wo42.1-40.1, FeO/MnO = 30-31, N = 2), olivine (Fa41.4-46.5, FeO/MnO = 51-56, N = 2), plagioclase (An87.8-92.1Or0.9-0.5, N = 2).

Classification: Diogenite (polymict breccia).

Specimens: 25.28 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017 Apr
Mass (g):171.3
Shock stage:low
Weathering grade:low
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):25.28
Type spec location:PSF
Main mass:F. Kuntz
Comments:Work name K328; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
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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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Ryan Upchurch   

     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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