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Northwest Africa 11106
Basic information Name: Northwest Africa 11106
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11106
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 2.91 kg
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Iron, IAB-MG
Recommended:  Iron, IAB-MG    [explanation]

This is 1 of 112 approved meteorites classified as Iron, IAB-MG.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 17 Feb 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11106 (NWA 11106)

Morocco

Purchased: February 2016

Classification: Iron meteorite (IAB-MG)

History: According to the seller, a single large specimen were found in a place called Souhada, close to Lmahbes (El Mahbes).

Physical characteristics: The main mass has a dark brown exterior with patches of rusty red and light brown, and is irregular in shape.

Petrography: Polished and etched surfaces show kamacite grains up to 4 cm across with an equilibrated (120 junction) texture and containing schreibersite up to 1.5 cm in longest dimension. Neumann lines are evident. Veins of iron oxides extend into the interior along grain boundaries. No fusion crust or heat-affected zone was observed.

Geochemistry: ICP-MS data, using sample of North Chile (Filomena) as standard (C. Herd and G. Chen UAb): Ni = 6.8, Co = 0.49 (both wt%); Ir <0.015, Ga = 67, Ge = 219, W = 0.6, Re <0.008, Os <0.04, Cu = 155, Ru = 3.0, Pd = 2.6, Pt = 3.1 (all μg/g).

Classification: (C. Herd, UAb): IAB-MG, although concentrations of Re, Ir, W and Pt seem to be anomalously low. Similar to IAB-MG irons such as La Serena or Zaffra (Wasson and Kallemeyn, 2002).

Specimens: Type specimen consisting of a 73.6 g representative slice and numerous small fragments (from <0.1 g to 22.6 g) at UAb. Main mass with Kuntz.

Bibliography:
  • Wasson J.T. and Kallemeyn, G.W. (2002) The IAB iron-meteorite complex: A group, five subgroups, numerous grouplets, closely related, mainly formed by crystal segregation in rapidly cooling melts. Geochim. Cosmochim. Acta 66 2445-2473 (link)
Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P February 2016
Mass (g):2910
Pieces:1
Class:Iron, IAB-MG
Shock stage:low
Weathering grade:low
Classifier:C. Herd, UAb
Type spec mass (g):123.1
Type spec location:UAb
Main mass:F. Kuntz
Comments:Field name K299; submitted by C. Herd
Institutions
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
Kuntz: Fabien Kuntz, France; Website (private address)
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.
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1370 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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