Meteoritical Bulletin: Entry for Northwest Africa 10968

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Northwest Africa 10968

Basic information

Name: Northwest Africa 10968
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10968
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 899 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Diogenite-pm
Recommended:			Diogenite-pm [explanation]

This is 1 of 44 approved meteorites classified as Diogenite-pm. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 3 Mar 2017

Writeup

help

Writeup from MB 106:

Northwest Africa 10968 (NWA 10968)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Diogenite, polymict)

History: Purportedly found near Zaida, Morocco, and purchased by Ben Hoefnagels in April to June 2016 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed predominantly of angular grains of diogenitic orthopyroxene (exhibiting undulose extinction) with a few percent shocked basaltic eucrite clasts, plus accessory chromite, anorthitic plagioclase, Ti-chromite, troilite and taenite. Eucrite clasts consist of exsolved pigeonite, calcic plagioclase (polycrystalline and in part maskelynite), silica polymorph, chromite, ilmenite and Ni-free metal.

Geochemistry: Orthopyroxene (Fs_25.1-27.1Wo_1.9-1.2, FeO/MnO =24-30; rim Fs_39.4Wo_2.6, FeO/MnO = 31; N = 3), orthopyroxene host (Fs_48.1Wo_2.8, FeO/MnO = 29), clinopyroxene exsolution lamellae (Fs_21.2-28.5Wo_41.7-41.5, FeO/MnO = 22-26, N = 2), plagioclase (An_83.6Or_1.0; An_93.1Or_0.2).

Classification: Diogenite (polymict, shocked).

Specimens: 24.23 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Ouarzazate
Date:	P 2016
Mass (g):	899
Pieces:	3
Class:	Diogenite-pm
Shock stage:	high
Weathering grade:	low
Ferrosilite (mol%):	25.1-27.1; 48.1; 21.2-28.5
Wollastonite (mol%):	1.9-1.2; 2.8; 41.7-41.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	24.23
Type spec location:	UWB
Main mass:	B. Hoefnagels
Comments:	BH011; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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