Meteoritical Bulletin: Entry for Northwest Africa 8669

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Northwest Africa 8669

Basic information

Name: Northwest Africa 8669
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8669
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 85 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 660 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 12 Dec 2014

Writeup

Writeup from MB 103:

Northwest Africa 8669 (NWA 8669)

(Northwest Africa)

Purchased: 2014 May

Classification: Ureilite

History: Purchased from a Moroccan dealer by John Higgins in May 2014.

Petrography: (A. Irving and S. Kuehner, UWS) Coarse grained assemblage of olivine and pyroxene, both of which have been recrystallized to very fine grained, polygonal aggregates. Olivine grains have fairly thick reduced rims containing fine grained iron metal, which has been heavily oxidized to iron oxyhydroxides during terrestrial weathering.

Geochemistry: Olivine (cores Fa_19.0-19.2, Cr₂O₃ = 0.7 wt.%, N = 2; rim Fa_10.2), orthopyroxene (Fs_14.2Wo_2.8), pigeonite (Fs_10.4Wo_5.0).

Classification: Ureilite

Specimens: 21 g including one polished thin section at UWB. The remaining material is held by Mr. J. Higgins.

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Laayoune
Date:	P 2014 May
Mass (g):	85
Pieces:	1
Class:	Ureilite
Shock stage:	high
Weathering grade:	high
Fayalite (mol%):	19.0-19.2
Ferrosilite (mol%):	14.2
Wollastonite (mol%):	5.0
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH14-8; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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