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Northwest Africa 8443
Basic information Name: Northwest Africa 8443
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8443
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 164.2 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Iron, IAB Complex
Recommended:  Iron, IAB Complex    [explanation]

This is 1 of 82 approved meteorites (plus 1 unapproved name) classified as Iron, IAB Complex.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 16 Jun 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8443 (NWA 8443)

Morocco

Purchased: Feb 2013

Classification: Iron meteorite (IAB complex)

History: A single specimen was purchased in February 2013 by Andreas Koppelt from a Moroccan dealer in Zagora.

Physical characteristics: The 164.2 g mass is shield shaped and oriented with moderate weathering. The leading edge of the specimen is characterized by a ~7 × 7 mm circular depression.

Petrography: Optical investigation reveals a well-developed Widmanstätten pattern consistent with a fine octahedrite. Plessite is common.

Geochemistry: Bulk composition: INAA data (J. Duke and C. Herd, UAb): Ni=9.59±0.08 wt%, Co=0.504±0.003 wt%; Ir=0.83±0.04, Au=1.58±0.02, Ga=49.4±0.6, As=15.1±0.2, W=0.28±0.07, Re<0.1, Cr=40±13, Cu=292±22, Ge=115±22 (all μg/g).

Classification: (C. Herd, UAb): IAB complex, fine octahedrite. Trace element composition suggestive of Udei Station grouplet of Wasson and Kallemeyn (2002).

Specimens: Type specimen of 22.6 g, including slice used for INAA, at UAb. Most of the main mass remains with A. Koppelt.

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:
  MB103
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P Feb 2013
Mass (g):164.2
Pieces:1
Class:Iron, IAB Complex
Shock stage:low
Weathering grade:moderate
Classifier:C. Herd, UAb
Type spec mass (g):22.6
Type spec location:UAb
Main mass:A. Koppelt
Comments: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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2003 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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