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| Northwest Africa 3117 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 3117 This is an OFFICIAL meteorite name. Abbreviation: NWA 3117 Observed fall: No Year found: 2003 Country: Morocco Mass:  234 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 446 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 89:
Northwest Africa 3117 Northwest Africa Found 2003 Achondrite (howardite) Three stones that weigh a total of 2.45 Kg were purchased in Erfoud, Morocco in December 2003. Description and classification (J. Wittke and T. Bunch, NAU): howardite breccia of fine-to medium clast size (<3.0 mm); very heterogeneous distribution of diogenite clasts; cumulate basalt clasts were probably derived from the same basaltic provenance. All clasts are highly shocked (shock level 3-6): pyroxenes and plagioclase were subjected to shock-induced, solid-state recrystallization; a few have completely melted. Eucrite pigeonite, Fs47.3-52Wo16.7-7.7; Ca-rich pyroxene, Fs40Wo25.2, Fe/Mn = 28.5; plagioclase, An90.7-92.0; chromite, cr# = 80.3, fe# = 94.8; metal, Ni = 1.99 wt. %; ilmenite and silica. Diogenite orthopyroxene, Fs48.4-54.9Wo1.1-2.7, Fe/Mn = 32.5. Possibly paired with NWA 1929. Low weathering grade. Specimens: 3.8 g, NAU; 21.4 g, UCLA; main mass, Hupé. | ||||||||||||||||||||||||||||||||||||
| Data from: MB89 Table 7 Line 458: |
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| Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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| Photos: |
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Geography:
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Statistics: This is 1 of 1991 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||