Meteoritical Bulletin: Entry for Northwest Africa 11341

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Northwest Africa 11341

Basic information

Name: Northwest Africa 11341
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11341
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 240 g

Classification
history:

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

This is 1 of 408 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 28 Jun 2017

Writeup

help

Writeup from MB 106:

Northwest Africa 11341 (NWA 11341)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, polymict)

History: Purchased by Dustin Dickens in Morocco, January 2016.

Physical characteristics: Seven identical appearing stones with weathered exteriors. Saw cuts show a breccia with black shock melt domains, a few vesicles were observed.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows fragmental breccia of basaltic clasts, feldspars clasts, pyroxene clasts, and vesicular shock melt pockets. Accessory silica, ilmenite and chromite are present.

Geochemistry: (C. Agee and B. Ha, UNM) Diogenitic pyroxene Fs_22.6Wo_2.1, Fe/Mn=31, n=1; cumulate eucritic pyroxene Fs_35.1±2.9Wo_5.3±2.6, Fe/Mn=29±2, n=4; basaltic eucritic pyroxene Fs_50.2±4.5Wo_8.3±4.3, Fe/Mn=30±1, n=7; basaltic sub-calcic augite Fs_37.8Wo_23.5, Fe/Mn=29, n=1; plagioclase An_92±1.9, n=9.

Classification: Polymict eucrite based on the volume percent lithologies: ~62% basaltic eucrite, 31% cumulate eucrite, and ~8% diogenite.

Specimens: 20.0 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2016
Mass (g):	240
Pieces:	7
Class:	Eucrite-pmict
Shock stage:	high
Weathering grade:	moderate
Ferrosilite (mol%):	22.6, 35.1±2.9, 50.2±4.5
Wollastonite (mol%):	2.1, 5.3±2.6, 8.3±4.3
Classifier:	C. Agee, UNM
Type spec mass (g):	20
Type spec location:	UNM
Main mass:	Dustin Dickens
Comments:	DD-12; submitted by C. Agee, UNM

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)

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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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