Meteoritical Bulletin: Entry for Northwest Africa 10667

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Northwest Africa 10667

Basic information

Name: Northwest Africa 10667
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10667
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 94.2 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Eucrite-mmict
Recommended:			Eucrite-mmict [explanation]

This is 1 of 295 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 11 Jun 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10667 (NWA 10667)

(Northwest Africa)

Purchased: 2015 Nov

Classification: HED achondrite (Eucrite, monomict)

History: Four slices from a single stone (total weight 94.2 g) were purchased by John Shea in November 2015 from a dealer in Lexington, Kentucky, who had acquired the material from a Moroccan merchant.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of basaltic eucrite clasts and related crystalline debris. Minerals are exsolved pigeonite (pale orange in thin section with some brown zones), calcic plagioclase (with undulose extinction), silica polymorph, ilmenite, Ti-chromite, and secondary calcite and barite.

Geochemistry: Orthopyroxene host (Fs_58.9-63.0Wo_4.9-2.5, FeO/MnO = 31-33, N = 3), clinopyroxene exsolution lamella (Fs_28.1Wo_42.2, FeO/MnO = 33), clinopyroxene host in exsolved pigeonite (Fs_26.9Wo_43.4, FeO/MnO = 30), plagioclase (An_89.7-89.9Or_0.3-0.5, N = 2).

Classification: Eucrite (basaltic breccia, shocked).

Specimens: 24.3 g including one polished thin section at UWB; remainder with Mr. J. Shea.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Lexington, KY
Date:	P 2015 Nov
Mass (g):	94.2
Pieces:	1
Class:	Eucrite-mmict
Shock stage:	moderate
Weathering grade:	moderate
Ferrosilite (mol%):	58.9-63.0; 26.9-28.1
Wollastonite (mol%):	4.9-2.5; 43.4-42.2
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	24.3
Type spec location:	UWB
Main mass:	J. Shea
Comments:	Shea16-1; submitted by A. Irving

Institutions
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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

Catalogs:

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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9927 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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