Meteoritical Bulletin: Entry for Northwest Africa 7716

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Northwest Africa 7716

Basic information

Name: Northwest Africa 7716
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7716
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 2.52 kg

Classification
history:

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

This is 1 of 74 approved meteorites classified as Pallasite. [show all]
Search for other: Metal-rich meteorites, Pallasites

Comments:

Approved 14 Nov 2013

Writeup

Writeup from MB 102:

Northwest Africa 7716 (NWA 7716)

(Northwest Africa)

Purchased: 2012 Jan

Classification: Pallasite

History: Purchased by John Higgins in January 2012 from a dealer in Ouarzazate, Morocco.

Physical characteristics: A group of 40 small weathered stones.

Petrography: (A. Irving and S. Kuehner, UWS) This extensively weathered specimen now consists of fragments of fresh olivine (with rare troilite inclusions) cross-cut by veinlets of iron hydroxides containing some remnant kamacite and taenite.

Geochemistry: Olivine (Fa_13.7±0.1, n = 3; FeO/MnO = 39-42).

Classification: Pallasite.

Specimens: 40 g of material and one polished thin section are at UWB. The remaining material is held by Mr. J. Higgins.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Ouarzazate
Date:	P 2012 Jan
Mass (g):	2517
Pieces:	many
Class:	Pallasite
Shock stage:	low
Weathering grade:	W4
Fayalite (mol%):	13.7±0.1 (n = 3)
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	40
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH13-2; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

Catalogs:

References:

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