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Northwest Africa 4934 | |||||||||||||
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Basic information | Name: Northwest Africa 4934 This is an OFFICIAL meteorite name. Abbreviation: NWA 4934 Observed fall: No Year found: 2007 Country: (Northwest Africa) Mass: 307 g | ||||||||||||
Classification history: |
This is 1 of 451 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||
Comments: |
Approved 14 Jan 2008 Revised 4 Aug 2008: final writeup | ||||||||||||
Writeup |
Writeup from MB 93:
Northwest Africa 4934 Northwest Africa Find: October 2007 Achondrite (howardite) History: Purchased by Greg Hupé in October 2007 from a dealer in Tagounite, Morocco. Physical characteristics: A single stone (307 g) with patches of weathered fusion crust. The interior contains many dark and light colored clasts (mostly 1-5 mm across), including prominent yellow-green diogenite clasts (up to 14 mm across), in a light gray matrix. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of mineral fragments of orthopyroxene, calcic plagioclase, exsolved pigeonite, silica polymorph, ilmenite, chromite and troilite, plus diogenite clasts (composed of orthopyroxene with accessory chromite). Geochemistry: Orthopyroxene (Fs23.8-33.3Wo2.2-2.5; FeO/ MnO = 24.4-29.0), orthopyroxene host in exsolved pigeonite (Fs65.1Wo4.3; FeO/MnO = 35.2), plagioclase (An90.5-93.4Or0.4-0.1). Classification: Achondrite (howardite). Minimal interior weathering. Specimens: A total of 20.3 g of sample and one polished thin section are on deposit at UWS. GHupé holds the main mass. Submitted by: A. Irving, UWS.
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Data from: MB93 Table 2 Line 155: |
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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) GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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Photos: |
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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