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| Northwest Africa 2996 | |||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 2996 This is an OFFICIAL meteorite name. Abbreviation: NWA 2996 Observed fall: No Year found: 2006 Country: Algeria Mass:  968 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 92 approved meteorites classified as Lunar. [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||
| Comments: | Approved 8 Sep 2008 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 95:
Northwest Africa 2996 Algeria Find: 2006 Achondrite (lunar, feldspathic breccia) History and physical characteristics: A 968 g, partially crusted stone, was purchased in Morocco in November 2006 by Adam Aaronson and sold to a private collector in 2007. The weathered crust shows a color range of vermillion to dark brown to black. Several anorthositic clasts exposed on broken surfaces are as large as 3 cm. Petrography (T. Bunch and J. Wittke, NAU): This feldspathic breccia has an extensive melt matrix with prominent entrainments of tiny bubbles. Lithologies include anorthosite, medium-grained gabbros, anorthositic norites and troctolites, in addition to mineral fragments, shocked clasts, and devitrified glassy clasts. Mineral compositions: A medium-grained gabbroic clast contains plagioclase (An92.1), olivine (Fa32.4, FeO/MnO = 110), Ca pyroxene (Fs22.4Wo19.1), chromite (cr# = 61) and ilmenite (MgO = 5.3 wt%). Anorthositic norite low-Ca pyroxene is Fs28.6Wo3.1 (FeO/MnO = 64), troctolitic olivine is Fa31.9, FeO/MnO = 104 and plagioclase clasts range from An91.8 to An97.4. Bulk chemistry (R. Korotev, WUSL): TiO2 = 0.68 wt%, Al2O3 = 20.7 wt%, FeO = 9.7 wt%, MgO = 8.0 wt%, Ni = 184 ppm, Sm = 4.6 ppm and Th = 1.6 ppm. Classification: Lunar (feldspathic breccia). | ||||||||||||||||||||||||||
| Data from: MB95 Table 2 Line 39: |
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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) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)
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Geography:
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Statistics: This is 1 of 1060 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||