|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: 263 g
This is 1 of 110 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites
|Comments:||Approved 12 Dec 2014|
Writeup from MB 103:
Northwest Africa 8673 (NWA 8673)
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.
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)
|References:||Published in Meteoritical Bulletin, no. 103, in preparation (2014)|
This is 1 of 5725 approved meteorites from (Northwest Africa) (plus 2074 unapproved names)
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