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Northwest Africa 7290 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7290 This is an OFFICIAL meteorite name. Abbreviation: NWA 7290 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 617 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||
Comments: | Approved 29 Sep 2013 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 7290 (NWA 7290) (Northwest Africa) Found: 2011 Classification: Ureilite History: Discovered by local people inthe Erg Chech area in 2011, purchased in Agadir in 2012 Feb. Physical characteristics: Two black to brown fragments with oriented fusion crust and a further 16 small fragments, totalling 52.3 g. Saw-cut surface shows brown patches in dark matrix. Magnetic susceptibility log χ = 4.35. Petrography: Thin section displays olivine and pyroxene crystallites with triple junctions, grain size 0.5-5 mm. Grain boundaries occupied with graphite and metal. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine: Fa21.2-22.8; mean 22.2; σ=0.48; Cr2O3=0.7-0.8 wt.%; Fe/Mn=45, σ=6.3 (n=16). Ca-pyroxene: Fs18.6En73.6Wo7.8 (n=3). Kamacite: Ni=3.3, Co=0.45, Si=0-6.2 wt.% (n=3). Classification: Ureilite Specimens: 10.5 g on deposit at Kiel, main mass Bart. | ||||||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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Institutions and collections |
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013) Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |