Meteoritical Bulletin: Entry for Northwest Africa 10708

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Northwest Africa 10708

Basic information

Name: Northwest Africa 10708
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10708
Observed fall: No
Year found: 2016
Country: Western Sahara
Mass: 94.6 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 20 Jun 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10708 (NWA 10708)

Western Sahara

Purchased: Jan 2016

Classification: HED achondrite (Howardite)

History: Purchased in January 2016; reportedly found in Bir-Ghanem by a local bedouin, November 2015.

Physical characteristics: Single stone with fusion crust. A saw-cut surface shows a breccia with fragmental light and dark clasts set in a light-gray groundmass. Numerous metal grains are scattered throughout the surface some up to 3 mm.

Petrography: (C. Agee, UNM) This is a polymict breccia with at least three distinct lithologies: ~50% diogenite, ~25% equilibrated basaltic eucrite and ~25% cumulate eucrite. Ubiquitous iron-nickel metal, Fe-sulfide and chromite present.

Geochemistry: (C. Agee and M. Spilde, UNM) Diogenite pyroxene Fs_25.2±1.8Wo_2.3±0.9, Fe/Mn=29±2, n=10; cumulate low-Ca pyroxene Fs_40.6±3.2Wo_2.8±2.0, Fe/Mn=29±4, n=4; basaltic eucrite pigeonite Fs_49.6±8.5Wo_10.7±5.8, Fe/Mn=30±1, n=4; basaltic eucrite high-Ca pyroxene Fs_38.1±13.3Wo_38.5±4.0, Fe/Mn=33±1, n=3; plagioclase An_88.9±6.5, n=5.

Classification: Howardite, metal-rich.

Specimens: 19 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):	94.6
Pieces:	1
Class:	Howardite
Shock stage:	high
Weathering grade:	low
Classifier:	C. Agee, UNM
Type spec mass (g):	19
Type spec location:	UNM
Main mass:	Darryl Pitt
Comments:	Field name MCVICH037; 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

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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