Meteoritical Bulletin: Entry for Northwest Africa 10711

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Northwest Africa 10711

Basic information

Name: Northwest Africa 10711
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10711
Observed fall: No
Year found: 2016
Country: Western Sahara
Mass: 54.9 g

Classification
history:

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

This is 1 of 280 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 16 Oct 2016

Writeup

Writeup from MB 105:

Northwest Africa 10711 (NWA 10711)

Western Sahara

Purchased: Jan 2016

Classification: HED achondrite (Eucrite, monomict)

History: Purchased in January 2016; reportedly found in El-Hamada, November 2015.

Physical characteristics: Single stone with fresh fusion crust. A saw-cut surface shows a breccia with light and dark clasts of varying grain size.

Petrography: (C. Agee, UNM) This meteorite is an equilibrated monomict basaltic meteorite with ~50% pyroxene, ~50% plagioclase. Most pyroxenes show exsolution lamellae.

Geochemistry: (C. Agee and M. Spilde, UNM) Low-Ca pyroxene Fs_59.0±2.1Wo_3.2±2.2, Fe/Mn=33±1, n=6; high-Ca pyroxene Fs_28.4±2.8Wo_40.6±2.4, Fe/Mn=32±2, n=7; plagioclase An_91.2±2.1, n=5.

Classification: Eucrite (monomict)

Specimens: 11 g including a probe mount on deposit at UNM, DPitt holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P Jan 2016
Mass (g):	54.9
Pieces:	1
Class:	Eucrite-mmict
Shock stage:	high
Weathering grade:	low
Ferrosilite (mol%):	59.0±2.1, 28.4±2.8
Wollastonite (mol%):	3.2±2.2, 40.6±2.4
Classifier:	C. Agee, UNM
Type spec mass (g):	11
Type spec location:	UNM
Main mass:	DPitt
Comments:	Field name MCVICH040; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)

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:

Western Sahara

Coordinates:

Unknown.

Statistics:
This is 1 of 280 approved meteorites from Western Sahara (plus 20 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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