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Northwest Africa 12769
Basic information Name: Northwest Africa 12769
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12769
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 349 g
Meteoritical Bulletin:  MB 108  (2020)  Iron, IVB
Recommended:  Iron, IVB    [explanation]

This is 1 of 18 approved meteorites classified as Iron, IVB.   [show all]
Search for other: Iron meteorites, IVB irons, and Metal-rich meteorites
Comments: Approved 26 Sep 2019
Writeup from MB 108:

Northwest Africa 12769 (NWA 12769)


Purchased: January 2019

Classification: Iron meteorite (IVB)

History: A single 349 g stone purchased from a dealer in Zagora in January 2019.

Physical characteristics: The main mass is roughly shield-shaped, 7.5 × 3 cm across and 2 cm thick. The exterior surface is mottled red-brown to dark brown, with rusty red spots.

Petrography: (C. Herd, L. Tunney, and R. Bukatiuk, UAb) Optical and SEM examination of a 1.5 × 2.5 cm polished and etched slice, show extremely fine (~5 μm) intergrowths of kamacite and taenite, with ~20 × 50 μm lozenge-shaped inclusions of kamacite and schreibersite. Some areas of taenite are also present, ~50 μm across and up to a few hundred μm long.

Geochemistry: (C. Herd and L. Tunney, UAb) ICP-MS data, using sample of North Chile (Filomena) as standard: Ni = 17.5, Co = 0.79 (both wt%); Ir = 15.1, Ga <0.5, Ge <2.6, As = 1.6, W = 3.0, Re = 1.4, Os = 1.9, Pd = 9.6, Pt = 30.2, Cu = 7.5, Au <0.8 (all µg/g).

Classification: Iron, IVB, ataxite

Specimens: Type specimen of 21.7 g at UAb. Main mass with Kuntz.

Data from:
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P January 2019
Mass (g):349.1
Class:Iron, IVB
Shock stage:low
Weathering grade:low
Classifier:C. Herd and L. Tunney, UAb
Type spec mass (g):21.7
Type spec location:UAb
Main mass:F. Kuntz
Comments:Field number K418; 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 1887 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

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