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Northwest Africa 11425
Basic information Name: Northwest Africa 11425
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11425
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 121.4 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 224 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 13 Oct 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11425 (NWA 11425)

(Northwest Africa)

Purchased: 2017 Apr

Classification: HED achondrite (Eucrite, monomict)

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

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of subophitic eucrite clasts within a sparse matrix of related crystalline debris. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, chromite, ilmenite, troilite, zircon and low-Ni metal.

Geochemistry: Orthopyroxene host (Fs62.4Wo1.7, FeO/MnO = 33), clinopyroxene exsolution lamella (Fs28.5Wo40.4, FeO/MnO = 37), clinopyroxene host (Fs26.5Wo43.1, FeO/MnO = 34), orthopyroxene exsolution lamella (Fs61.9Wo1.9, FeO/MnO = 33), plagioclase (An87.2-88.9Or0.8, N = 2).

Classification: Eucrite (monomict breccia).

Specimens: 23.21 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017 Apr
Mass (g):121.4
Pieces:1
Class:Eucrite-mmict
Shock stage:low
Weathering grade:low
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.21
Type spec location:PSF
Main mass:F. Kuntz
Comments:Work name K325; submitted by A. Irving
Institutions
   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)
Catalogs:
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:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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