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Northwest Africa 7285 | |||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7285 This is an OFFICIAL meteorite name. Abbreviation: NWA 7285 Observed fall: No Year found: 2011 Country: Morocco 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 17 Jul 2012 | ||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 101:
Northwest Africa 7285 (NWA 7285) Morocco Purchased: 2011 Dec 11 Classification: HED achondrite (Eucrite) History: Purchased by Sean Tutorow in Morocco, December 11, 2011. Physical characteristics: Single stone, partial dark fusion crust, light-brown exterior from desert weathering, saw cut reveals fresh, light gray, fine-grained phaneritic texture. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows approximately 55% pyroxene, 40% plagioclase, minor ilmenite, silica, troilite, and Fe-metal (low Ni). Fine exsolution lamellae in some pyroxenes, plumose pyroxene-plagioclase textures also present. Geochemistry: (C. Agee and N. Wilson, UNM) Mean pyroxene Fs51.5±8.0Wo15.5±9.8, Fe/Mn=33±1, n=13; pyroxenes lie on trend from Fs58.2Wo6.4 to Fs31.3Wo39.7, consistent with equilibrated eucrites. Plagioclase Or1.0±0.3Ab16.4±2.4An82.5±2.6, n=5. Classification: Equilibrated eucrite, minor weathering. Specimens: 21. 5 g including a probe mount on deposit at UNM, Sean Tutorow 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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Photos: |
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Geography:![]() |
Statistics: This is 1 of 1932 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater) |