Meteoritical Bulletin: Entry for Northwest Africa 7682

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Northwest Africa 7682

Basic information

Name: Northwest Africa 7682
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7682
Observed fall: No
Year found: 2012
Country: Morocco
Mass: 73 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	Eucrite
Recommended:			Eucrite [explanation]

This is 1 of 603 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 26 Feb 2013

Writeup

Writeup from MB 102:

Northwest Africa 7682 (NWA 7682)

Morocco

Purchased: 2012

Classification: HED achondrite (Eucrite)

History: Purchased by Adam Bates from a meteorite dealer in Morocco, August, 2012.

Physical characteristics: Single stone, some smooth fusion crust. Saw cut and broken surfaces show friable, light gray, fine grained texture.

Petrography: Microprobe examination of a polished mount shows approximately 60% pyroxene and 30% plagioclase, plus accessory silica, ilmenite, troilite, and low-Ni iron metal.

Geochemistry: (C. Agee, M. Spilde, L. Burkemper, UNM) Pyroxene Fs_50.4±1.9Wo_11.6±2.0, Fe/Mn=33±1, n=24; plagioclase An_89.8±0.6, n=3.

Classification: Achondrite (Eucrite), basaltic eucrite. Possibly paired with NWA 7609.

Specimens: 14.6 g including a probe mount on deposit at UNM, Adam Bates holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2012
Mass (g):	73
Pieces:	1
Class:	Eucrite
Ferrosilite (mol%):	50.4±1.9
Wollastonite (mol%):	11.6±2.0
Classifier:	C. Agee, UNM
Type spec mass (g):	14.6
Type spec location:	UNM
Main mass:	Adam Bates
Comments:	Submitted by C. Agee

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 Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015

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Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

Crosslinks:

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Revision
history:

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