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Northwest Africa 7270 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7270 This is an OFFICIAL meteorite name. Abbreviation: NWA 7270 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: 863 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 Sep 2013 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7270 (NWA 7270) (Northwest Africa) Purchased: 2012 Feb Classification: HED achondrite (Eucrite) History: Purchased by GHupé in 2012 February from a Moroccan dealer at the Tucson Gem and Mineral Show. Petrography: (A. Irving and S. Kuehner, UWS) Complex fragmental breccia composed mainly of shocked gabbroic eucrite clasts and some dark, fine grained, quench-textured eucrite clasts in a sparse fragmental matrix. Gabbroic eucrite clasts consist predominantly of pyroxenes and calcic plagioclase (exhibiting spherulitic texture of lamellar birefringent subgrains). The specimen exhibits orange staining from terrestrial weathering of minor metal. Geochemistry: Orthopyroxene (Fs19.5Wo1.3; Fs36.3Wo2.0; Fs53.7Wo5.7; FeO/MnO = 29-33), pigeonite (Fs47.5Wo19.1; Fs52.9Wo8.7; FeO/MnO = 31-32), augite (Fs25.0Wo40.9; FeO/MnO = 28). Classification: Eucrite, polymict. | ||||||||||||||||||||||||||||
Data from: MB102 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) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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