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| Northwest Africa 11181 | |||||||||||||||||||||
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| Basic information | Name: Northwest Africa 11181 This is an OFFICIAL meteorite name. Abbreviation: NWA 11181 Observed fall: No Year found: 2015 Country: Algeria Mass:  190 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 68 approved meteorites classified as Iron, IAB-ung. [show all] Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites | ||||||||||||||||||||
| Comments: | Approved 1 Apr 2017 | ||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Northwest Africa 11181 (NWA 11181) Algeria Find: 2015 Classification: Iron meteorite (IAB, ungrouped) History: Discovered in the Algerian Sahara. Physical characteristics: One iron piece of about 5 × 3 × 2.5 cm and 190 g. Petrography: The meteorite shows a fine Widmanstätten pattern dominantly with bandwidth of 0.5-1 mm and width-length ratio of 0.2 with Neumann lines, plus some areas of granular kamacite up to 3 mm. Schreibersite occurs on kamacite boundaries. Geochemistry: Mineral compositions and geochemistry ((M. Humayun, FSU, by LA-ICP-MS): The composition of the metal is Co = 0.48, Ni = 10.68 (both in wt.%); Cu = 507, Ga = 73, Ga = 207, Ge = 207, As = 12, Sb = 043, Ir = 1.56, Au = 1.52 (all in ppm); standards were Odessa, Toluca, Staunton, Dungannon. Classification: (R. Bartoschewitz, Bart): Iron (IAB complex, ungrouped, fine octahedrite). Specimens: 24.0 g on deposit at Kiel, main mass of 126.1 g with Alan Mazur and 28.6 g with Bart. | ||||||||||||||||||||
| Data from: MB106 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) FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010) |
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| References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:
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Statistics: This is 1 of 1294 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||