|Northwest Africa 10756|
|Basic information||Name: Northwest Africa 10756|
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10756
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 125 g
This is 1 of 111 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites
|Comments:||Approved 13 Aug 2016|
Writeup from MB 105:
Northwest Africa 10756 (NWA 10756)
Purchased: 2015 Sep
Classification: Lunar meteorite (feldspathic breccia)
History: Purchased by Eric Twelker in September 2015 from a Moroccan dealer at the Denver Show.
Physical characteristics: A single stone (125 g) lacking fusion crust and consisting of beige, white and red-brown stained clasts in a dark-gray matrix.
Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of shocked gabbroic clasts and related crystalline debris, plus sparse devitrified glass clasts in a finer matrix containing vesicular glass. Minerals are olivine, pigeonite, exsolved pigeonite, augite, anorthite, Ti-poor chromite, Ti-rich chromite and ilmenite. Minor secondary calcite veinlets and barite are present.
Geochemistry: Olivine (Fa19.1-41.9, FeO/MnO = 69-78, N = 4), pigeonite (Fs41.0Wo5.2, FeO/MnO = 51), augite (Fs9.8Wo42.8, FeO/MnO = 36), low-Ca pyroxene host (Fs56.7Wo5.6, FeO/MnO = 56), clinopyroxene exsolution lamella (Fs30.2Wo39.1, FeO/MnO = 52), anorthite (An96.8Or0.2).
Classification: Lunar (feldspathic breccia).
Specimens: 20.5 g including one polished thin section at UWB; remainder with Twelker.
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)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
|References:||Published in Meteoritical Bulletin, no. 105, in preparation (2016)|
This is 1 of 5735 approved meteorites from (Northwest Africa) (plus 2073 unapproved names)
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