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Northwest Africa 8673
Basic information Name: Northwest Africa 8673
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8673
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 263 g
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 110 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 8673 (NWA 8673)

(Northwest Africa)

Purchased: 2014 Aug

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by GHupé in August 2014 from a dealer in Erfoud, Morocco.

Physical characteristics: Dark gray stone (263 g) lacking fusion crust. Interior slices exhibit dispersed, small beige clasts and specks of metal.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed of mineral clasts of anorthite, pigeonite, augite and olivine with accessory troilite and kamacite, plus sparse mare basalt clasts, in a finer matrix.

Geochemistry: Olivine (Fa23.0-29.3, FeO/MnO = 87-98, N = 3), orthopyroxene (Fs20.6Wo3.5, FeO/MnO = 58), pigeonite (Fs28.7-29.8Wo8.1-12.0, FeO/MnO = 55-62, N = 2), ferroan pigeonite in mare basalt clast (Fs51.4Wo24.1, FeO/MnO = 56), plagioclase (An93.9-97.8Or0.1-0.2, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 7.3, Na2O 0.31; (in ppm) Sc 18, Ni 370, La 4.2, Sm 1.9, Eu 0.73, Yb 1.75, Lu 0.24, Hf 1.5, Th 0.82.

Classification: Lunar (feldspathic fragmental breccia).

Specimens: 20.1 g including one polished endcut at UWB; main mass with GHupé.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2014 Aug
Mass (g):263
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):23.0-29.3
Ferrosilite (mol%):20.6; 28.7-29.8
Wollastonite (mol%):3.5; 8.1-12.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:GHupé
Comments:SH 26; 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)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, in preparation (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 5725 approved meteorites from (Northwest Africa) (plus 2074 unapproved names)

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