|
Northwest Africa 11027 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 11027 This is an OFFICIAL meteorite name. Abbreviation: NWA 11027 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 65.9 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 407 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 26 Jan 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11027 (NWA 11027) (Northwest Africa) Purchased: 2016 Aug Classification: HED achondrite (Eucrite, polymict) History: Puchased in Temara, Morocco by Adam Aaronson in October 2016. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed predominantly of lithic eucrite clasts and related crystalline debris, with subordinate (<10 vol.%) diogenitic orthopyroxene grains (exhibiting magnesian cores and more ferroan reaction rims). Textures in lithic clasts range from intersertal to variolitic; some symplectite clasts composed of fayalite+hedenbergite+silica polymorph also are present. Other minerals are clinopyroxene, anorthitic plagioclase, silica polymorph, sodic bytownite, ilmenite, troilite, rare baddeleyite and Ni-free metal. Geochemistry: Diogenitic orthopyroxene (cores Fs23.3-26.9Wo0.8-4.1; rims Fs47.0-54.0Wo0.8-1.9; FeO/MnO = 30-38, N = 2), clinopyroxene (Fs34.6-45.4Wo42.1-35.5, FeO/MnO = 28-29, N = 2), fayalitic olivine (Fa77.4-77.9, FeO/MnO = 43-44, N = 2), anorthite (An90.1Or0.3), bytownite (An76.4Or1.5). Classification: Eucrite (polymict breccia). Specimens: 13.2 g including one polished thin section at UWB; remainder with Aaronson. | ||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
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) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
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.
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|