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Northwest Africa 10224
Basic information Name: Northwest Africa 10224
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10224
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 318 g
Meteoritical Bulletin:  MB 104  (2015)  Iron, IID
Recommended:  Iron, IID    [explanation]

This is 1 of 26 approved meteorites classified as Iron, IID.   [show all]
Search for other: IID irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 18 Jul 2015
Writeup from MB 104:

Northwest Africa 10224 (NWA 10224)


Purchased: January 2014

Classification: Iron meteorite (IID)

History: Two identical-looking specimens (288.5 and 29.3 g) were purchased in January 2014 by Fabien Kuntz from a Moroccan dealer in Tagounite.

Physical characteristics: Curved, elongated specimen has a reddish-brown exterior with no obvious regmaglypts and little evidence of terrestrial alteration or weathering.

Petrography: Optical investigation reveals a well-developed Widmanstätten pattern consistent with a medium octahedrite (0.95±0.21 mm, n = 55).

Geochemistry: Bulk composition: ICP-MS data, using sample of North Chile (Filomena) as standard (C. Herd, S. DuFrane and G. Chen, UAb): Ni = 9.7, Co = 6.0 (both wt%); Ir = 14.9, Ga = 70.0, As = 3.5, W = 2.6, Re = 1.45, Cu = 240, Ru = 15.0, Pd = 2.5, Pt = 18.9 (all μg/g).

Classification: (C. Herd, UAb): IID, medium octahedrite. Concentrations of Ni, Cu, As, Ru, W, Re, Ir and Pt are consistent with the IID group (see Wasson and Huber, 2006). Ga is a bit low for IID, but too high for other groups (e.g., IIE, III and IV).

Specimens: Type specimen of 24.0 g, including slice removed for ICP-MS, at UAb. Main mass with Kuntz.

  • Wasson J.T. and Huber H. (2006) Compositional trends among IID irons; their possible formation from the P-rich lower magma in a two-layer core. Geochim. Cosmochim. Acta 70 6153–6167. (link)
Data from:
  Table 0
  Line 0:
Place of purchase:Tagounite
Date:P January 2014
Mass (g):317.8
Class:Iron, IID
Shock stage:low
Weathering grade:low
Classifier:C. Herd, UAb
Type spec mass (g):24.0
Type spec location:UAb
Main mass:F. Kuntz
Comments:Sample number K209; submitted by C. Herd
   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)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)


     This is 1 of 1904 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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