| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 3117 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 453 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: MB113 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
| Data from: MB89 Table 7 Line 458: |
|
||||||||||||||||||||||||||||||
| Institutions and collections |
NAU*: Collection discontinued. Specimens redistributed as shown in individual meteorite records, United States (institutional address; updated 24 Jun 2024) ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011) UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States (institutional address; updated 12 Apr 2012) |
||||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005) Published in Meteoritical Bulletin, no. 113, in preparation (2024)
| ||||||||||||||||||||||||||||||
| Photos: |
| ||||||||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||