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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:help 85 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 516 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 12 Dec 2014
Writeuphelp
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 Fa19.0-19.2, Cr2O3 = 0.7 wt.%, N = 2; rim Fa 10.2), orthopyroxene (Fs14.2Wo2.8), pigeonite (Fs10.4Wo5.0).

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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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