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Northwest Africa 11420
Basic information Name: Northwest Africa 11420
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11420
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 83.3 kg
Meteoritical Bulletin:  MB 106  (2018)  Iron, IIAB
Recommended:  Iron, IIAB    [explanation]

This is 1 of 145 approved meteorites classified as Iron, IIAB.   [show all]
Search for other: IIAB irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 13 Oct 2017
Writeup from MB 106:

Northwest Africa 11420 (NWA 11420)


Find: 2016

Classification: Iron meteorite (IIAB)

History: One piece of iron was collected in 2016 in an unknown area, Morocco, and purchased in Tucson in February 2017 from a Moroccan dealer.

Physical characteristics: The write up specimen is a 2350 g, partly crusted, regmaglypted, slightly weathered by naturally sandblasting.

Petrography: Etched section shows a normal hexahedrite structure with bright kamacite and several sets of Neumann lines. Schreibersite occurs as numerous rhabdites and small patches.

Geochemistry: SEM-EDX spot analyses: kamacite Fe94.9±0.5Ni5.1±0.5 (N=11); Bulk composition: ICP-MS data, Ni 54 mg/g, Co 4.5 mg/g, Cu 139 μg/g, Ga 59 μg/g, Ge 221 μg/g, W 1.7 μg/g, Re 0.9 μg/g, Ir 7.6 μg/g, Pt 5.1 μg/g, Pd 1.7 μg/g, Ru 15.7 μg/g, Os 5.5 μg/g and Au 0.5 μg/g.

Classification: Iron, IIAB, hexahedrite.

Specimens: 31 g at UPC, 2.3 kg with anonymous owner, 2 stones of 22 kg and 59 kg with Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson fair
Mass (g):83300
Class:Iron, IIAB
Classifier:J. Llorca, UPC
Type spec mass (g):31 g
Type spec location:UPC
Main mass:Anonymous
Comments:Submitted by J. Llorca (UPC)
   and collections
UPC: Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya Diagonal 647, ed. ETSEIB, 08028 Barcelona, Spain, Spain (institutional address; updated 3 May 2015)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
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.
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     This is 1 of 1871 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater)

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