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Northwest Africa 8668
Basic information Name: Northwest Africa 8668
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8668
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 166.3 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 178 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 12 Dec 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8668 (NWA 8668)

(Northwest Africa)

Purchased: 2014 Jun

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Fabien Kuntz in June 2014 from a dealer in Ouarzazate, Morocco.

Physical characteristics: Dark gray, mottled stone (166.3 g) with some larger light gray clasts and interstital black regions.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively fine grained fragmental breccia composed of mineral clasts of anorthite, olivine and pigeonite, with accessory merrillite, Mg-ilmenite, Ti-rich chromite, kamacite, Cr-Mg-Zr-Fe titanate, baddeleyite, and rare troilite and barite.

Geochemistry: Olivine (Fa27.0-29.7, FeO/MnO = 81-83, N = 3), pigeonite (Fs22.5-47.8Wo9.8-12.5, FeO/MnO = 55-69, N = 3), plagioclase (An91.4-96.0Or1.1-0.3, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 5.7, Na2O 0.49; (in ppm) Sc 9.4, Ni 460, La 14.5, Sm 6.5, Eu 1.31, Yb 4.4, Lu 0.60, Hf 5.1, Th 2.1.

Classification: Lunar (feldspathic breccia). Close similarities in texture, mineralogy and bulk composition suggest that this specimen is paired with NWA 8455.

Specimens: 20.3 g including one polished endcut at UWB; main mass with Kuntz.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2014 Jun
Mass (g):166.3
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):27.0-29.7
Wollastonite (mol%):9.8-12.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.3
Type spec location:UWB
Main mass:F. Kuntz
Comments:K228; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
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:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Allmeteorite.com   
Antonello Petriccione   
Denis gourgues   
Franco Vignato   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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