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Northwest Africa 7515 | |||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7515 This is an OFFICIAL meteorite name. Abbreviation: NWA 7515 Observed fall: No Year found: 2012 Country: Morocco Mass: 160 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 18 Nov 2012 | ||||||||||||||||||||||||
Writeup |
Writeup from MB 101:
Northwest Africa 7515 (NWA 7515) Morocco Purchased: Aug 2012 Classification: HED achondrite (Eucrite) History: Purchased by Adam Bates from a meteorite dealer in Morocco, August, 2012. Physical characteristics: Two matching stones, 79 g and 81 g, black shiny fusion crust. Broken surface reveals fine-grained, light-gray, texture; highly friable. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows approximately 60% pyroxene and 35% plagioclase, with subophitic to equigranular texture. Many pyroxene grains show exsolution lamellae. Accessory silica, ilmenite, chromite, and troilite. Geochemistry: (C. Agee and M. Spilde, UNM) Low Ca-pyroxene Fs58.8±1.8Wo3.5±1.6, Fe/Mn=32±1, n=19; high Ca-pyroxene Fs34.5±7.2Wo32.3±8.7, Fe/Mn=32±2, n=11; plagioclase Or0.5±0.1Ab9.5±1.9An90.0±2.0, n=4. Classification: Achondrite: equilibrated, main group, basaltic eucrite. Specimens: 21 g including a probe mount on deposit at UNM, Adam Bates holds the main mass. | ||||||||||||||||||||||||
Data from: MB101 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography: |
Statistics: This is 1 of 2068 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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