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Northwest Africa 14494
Basic information Name: Northwest Africa 14494
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14494
Observed fall: No
Year found: 2017
Country: Mauritania
Mass:help 694 g
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 20 Dec 2021
Writeup from MB 110:

Northwest Africa 14494 (NWA 14494)


Purchased: 2017

Classification: Iron meteorite (IAB complex)

History: Purchased from Luc Labenne at the 2017 Ensisheim show. Reportedly found in Mauritania.

Physical characteristics: The 693.8 g mass is roughly tabular, approximately 3 × 6 × 10 cm, and has a dark brown surface with numerous sub-cm regmaglypts on one side. The other side is more planar, and has a mottled red-brown appearance.

Petrography: (C. Herd and P. Hill, UAb) Petrographic investigation of a 1.5 × 4.5 cm polished and etched surface reveals schreibersite inclusions up to 3 mm in width and over 15 mm in length, surrounded by approx. 0.5 mm wide swathing kamacite.

Geochemistry: ICP-MS data, using sample of North Chile (Filomena) as standard (C. Herd, P. Hill, and S. DuFrane UAb): Ni = 19.1, Co = 0.966 (both wt%); Ir = 0.15, Ga = 8.2, Ge = 12, As = 28.3, Sb = 0.857, Ru = 0.2, Re = 0.013, Os = 0.142, Pt = 0.14, Cu = 515 (all μg/g). W concentration was below detection (<0.1 ppb).

Classification: (C. Herd, UAb): IAB iron, ataxite. Most likely belongs to a high-Ni subgroup (sLH or sHH), by comparison with Wasson and Kallemeyn (2002).

Specimens: Type specimen consisting of a 27.4 g representative specimen at UAb. Main mass with Don Hurkot.

  • 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:
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2017
Mass (g):693.8
Class:Iron, IAB complex
Weathering grade:low
Classifier:C. Herd, UAb
Type spec mass (g):27.4
Type spec location:UAb
Main mass:Don Hurkot
Comments: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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 195 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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