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Northwest Africa 11061 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11061 This is an OFFICIAL meteorite name. Abbreviation: NWA 11061 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 1040 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 334 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 14 Feb 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11061 (NWA 11061) (Northwest Africa) Purchased: 2016 Nov Classification: Lunar meteorite (feldspathic breccia) History: Purportedly found near the Algeria/Mali border in October 2016, and purchased by Darryl Pitt in November 2016 from a dealer in Mauritania. Physical characteristics: A single stone (1040 g) lacking fusion crust. The fresh interior exhibits rounded, whitish anorthositic clasts (up to 1.8 cm across) and crystalline debris set in a medium-gray matrix containing obvious small vesicles. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral clasts of anorthite, exsolved pigeonite, olivine, orthopyroxene, pigeonite, ilmenite, Ti-chromite, Ti-free chromite, troilite and rare zircon, plus some lithic anorthosite clasts, in a finer grained, partly vesicular matrix of the same minerals. Geochemistry: Olivine (Fa19.4-52.9, FeO/MnO = 68-91, N = 5), orthopyroxene (Fs23.6Wo3.5, FeO/MnO = 53), pigeonite (Fs36.7Wo15.4, FeO/MnO = 53), low-Ca pyroxene host in exsolved pigeonite (Fs44.5Wo7.1, FeO/MnO = 53), high-Ca pyroxene host in exsolved pigeonite (Fs24.6Wo36.4, FeO/MnO = 52), plagioclase (An97.1-97.6Or0.1, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 3.4, Na2O 0.32; (in ppm) Sc 6.6, Ni 100, La 1.8, Sm 0.79, Eu 0.78, Yb 0.64, Lu 0.09, Hf 0.58, Th 0.30. Magnetic susceptibility log χ (× 10-9 m3/kg) = 2.61. Classification: Lunar (feldspathic regolith breccia). Specimens: 20.7 g including a polished endcut at UWB; remainder with DPitt. | ||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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