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Northwest Africa 2696 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 2696 This is an OFFICIAL meteorite name. Abbreviation: NWA 2696 Observed fall: No Year found: 2004 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 220 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 28 Sep 2020 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 2696 (NWA 2696) Northwest Africa Purchased: 2004 Classification: HED achondrite (Eucrite, brecciated) History: Purchased by Greg Hupé in 2004 from several Moroccan dealers. Petrography: (A. Irving, UWS and J. Boesenberg, Brown U) Breccia containing some fine- to medium-grained eucrite clasts plus abundant related angular crystalline debris. Minerals are exsolved pigeonite, calcic plagioclase, unexsolved pigeonite, subcalcic augite, ilmenite, silica, chromite, altered Ni-free metal and troilite. No olivine or diogenitic orthopyroxene was found in the studied thin section. Geochemistry: Low-Ca pyroxene host (Fs55.9-57.8Wo2.6-4.6, FeO/MnO = 27-29, N = 7), augite exsolution lamellae (Fs26.5-29.2Wo38.2-41.2, FeO/MnO = 26-28, N = 2), pigeonite (Fs44.6-48.8Wo19.5-14.7; Fs54.0Wo7.6; FeO/MnO = 25-29, N = 6), subcalcic augite (Fs39.7-42.0Wo27.0-24.0, FeO/MnO = 25-29, N = 2), plagioclase (An76.8-93.1Or1.9-0.5, N = 5). Classification: Eucrite (breccia). Specimens: 28 g including one polished thin section at PSF; remainder with Mr. G. Hupé. | ||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
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Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address) BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |