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Northwest Africa 8444
Basic information Name: Northwest Africa 8444
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8444
Observed fall: No
Year found: 2013
Country: Western Sahara
Mass:help 10.87 kg
Meteoritical Bulletin:  MB 103  (2014)  Iron, IIIAB
Recommended:  Iron, IIIAB    [explanation]

This is 1 of 331 approved meteorites classified as Iron, IIIAB.   [show all]
Search for other: IIIAB irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 16 Jun 2014
Writeup from MB 103:

Northwest Africa 8444 (NWA 8444)

Western Sahara

Purchased: Apr 2013

Classification: Iron meteorite (IIIAB)

History: One specimen (1406 g) found ~60 km northeast of Boujdour was purchased by Marc Jost in April 2013 was cut for classification. A second (9460 g) mass identical in external appearance was found in the same area in November 2013 by Aziz Mouadine.

Physical characteristics: Specimens show very little evidence of terrestrial alteration or weathering.

Petrography: Optical investigation reveals a well-developed Widmanstätten pattern consistent with a medium octahedrite. Some areas of plessite are visible.

Geochemistry: Bulk composition: INAA data (J. Duke and C. Herd, UAb): Ni = 7.07±0.07 wt%, Co = 0.497±0.003 wt%; Ir = 7.40±0.08, Au = 0.550 ± 0.009, Ga = 18.0 ± 0.8, As = 3.35±0.12, W = 0.99±0.09, Re = 0.80±0.03, Cr = 170±15, Cu = 174±15, Ge = 78±25 (all μg/g).

Classification: (C. Herd, UAb): IIIAB, medium octahedrite. Trace element composition consistent with IIIAB chemical group.

Specimens: Type specimen of 33.6 g, including slice used for INAA, at UAb. The 1406 g specimen with M. Jost, SJS. The 9460 g specimen is with Aziz Mouadine, Klagenfurt, Austria.

Data from:
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P Apr 2013
Mass (g):10866
Class:Iron, IIIAB
Shock stage:low
Weathering grade:low
Classifier:C. Herd, UAb
Type spec mass (g):33.6
Type spec location:UAb
Main mass:A. Mouadine
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)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Western Sahara

     This is 1 of 250 approved meteorites from Western Sahara (plus 20 unapproved names)

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