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Northwest Africa 11181
Basic information Name: Northwest Africa 11181
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11181
Observed fall: No
Year found: 2015
Country: Algeria
Mass:help 190 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Iron, IAB-ung
Recommended:  Iron, IAB-ung    [explanation]

This is 1 of 56 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
Writeuphelp
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:
Date:2015
Mass (g):190
Pieces:1
Class:Iron, IAB-ung
Classifier:Bart
Type spec mass (g):23.4
Type spec location:Kiel
Main mass:Alan Mazur
Finder:anonymous
Comments:Submitted by R. Bartoschewitz
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, Lehmweg 53, D-38518 Gifhorn, Germany; Website (private address; updated 4 Aug 2013)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
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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Photos:
CreditPhotos
Public domain photographs:
R. Bartoschwitz and M. Humayun   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 979 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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