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Northwest Africa 7124 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7124 This is an OFFICIAL meteorite name. Abbreviation: NWA 7124 Observed fall: No Year found: 2011 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 569 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 7124 (NWA 7124) (Northwest Africa) Purchased: 2011 Feb Classification: HED achondrite (Eucrite) History: Purchased by Reed in 2011 February from a Moroccan dealer at the Tucson Gem and Mineral Show. Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed mainly of crystal debris derived from gabbroic eucrites (pigeonite, exsolved pigeonite, calcic plagioclase, silica polymorph, chromite and troilite). Isolated grains of altered metal (kamacite+taenite) associated with Ni-bearing troilite also are present, and the specimen is cross-cut by veinlets of goethite. Geochemistry: Pigeonite (Fs39.6-39.8Wo11.0-10.5, FeO/MnO = 26-30), orthopyroxene host (Fs48.5Wo2.1, FeO/MnO = 25), clinopyroxene exsolution lamella (Fs21.1Wo42.3, FeO/MnO = 28). Classification: Eucrite. The high content of altered metal is very unusual. | ||||||||||||||||||||||||||||
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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |