Meteoritical Bulletin: Entry for Northwest Africa 11425

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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: 121.4 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Eucrite-mmict
Recommended:			Eucrite-mmict [explanation]

This is 1 of 293 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 13 Oct 2017

Writeup

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 (Fs_62.4Wo_1.7, FeO/MnO = 33), clinopyroxene exsolution lamella (Fs_28.5Wo_40.4, FeO/MnO = 37), clinopyroxene host (Fs_26.5Wo_43.1, FeO/MnO = 34), orthopyroxene exsolution lamella (Fs_61.9Wo_1.9, FeO/MnO = 33), plagioclase (An_87.2-88.9Or_0.8, 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:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Mike Markowitz
Ryan Upchurch

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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