Meteoritical Bulletin: Entry for Northwest Africa 10716

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Northwest Africa 10716

Basic information

Name: Northwest Africa 10716
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10716
Observed fall: No
Year found: 2015
Country: Mauritania
Mass: 151.4 g

Classification
history:

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

This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 20 Jun 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10716 (NWA 10716)

Mauritania

Purchased: 2015 Dec 1

Classification: HED achondrite (Eucrite, monomict)

History: Purchased 1 Dec 2015 in Mauritania. Recovered from near the border region of Western Sahara, Mauritania and Algeria.

Physical characteristics: Single stone with no fusion crust. A saw-cut surface shows a fine-grained mixture of plagioclase and pyroxene, with light brown color. Some mild brecciation is present.

Petrography: (C. Agee, UNM) Pyroxene (~60%) and plagioclase (~35%) are the major minerals in this meteorite. Pyroxenes show exsolution lamellae. Most grains range in size from 20-500 μm.

Geochemistry: (C. Agee and M. Spilde, UNM) Low-Ca pyroxene Fs_59.4±0.9Wo_5.0±1.1, Fe/Mn=32±1, n=9; high-Ca pyroxene Fs_30.8±5.2Wo_38.9±6.0, Fe/Mn=33±1, n=4; plagioclase An_88.8±0.9, n=4.

Classification: Monomict eucrite

Specimens: 20.3 g including a probe mount on deposit at UNM, DPitt holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2015 Dec 1
Mass (g):	151.4
Pieces:	1
Class:	Eucrite-mmict
Shock stage:	moderate
Weathering grade:	moderate
Ferrosilite (mol%):	59.4±0.9, 30.8±5.2
Wollastonite (mol%):	5.0±1.1, 38.9±6.0
Classifier:	C. Agee, UNM
Type spec mass (g):	20.3
Type spec location:	UNM
Main mass:	DPitt
Comments:	Field name MCVICH018; 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

Find references in NASA ADS:
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Geography:

Mauritania

Mauritania

Coordinates:

Unknown.

Statistics:
This is 1 of 193 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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