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Northwest Africa 4705
Basic information Name: Northwest Africa 4705
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4705
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 195 g
Classification
  history:
Meteoritical Bulletin:  MB 99  (2011)  Iron, ungrouped
Recommended:  Iron, ungrouped    [explanation]

This is 1 of 129 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped.   [show all]
Search for other: Iron meteorites, Metal-rich meteorites, and Ungrouped irons
Comments: Approved 21 Sep 2010
Writeuphelp
Writeup from MB 99:

Northwest Africa 4705 (NWA 4705)

(Northwest Africa)

Purchased: 2006

Classification: Iron meteorite (ungrouped)

Petrography: A small, plessitic octahedrite. Kamacite sparks and spindles have schreibersite in centers and thin taenite borders. Some spindles are very reflective, mirror like, similar to carbides. No FeS was observed. No heat-altered zone is preserved. Kamacite bandwidth 0.010±0.004 mm.

Geochemistry: Composition is exceptional, with high concentrations of almost all elements. Co (mg/g) 13.19, Ni (mg/g) 200.1, Ga (µg/g) 15.0, Ge (µg/g) 1300, As (µg/g) 32.8, Ir (µg/g) 58.9, Au (µg/g) 3.25.

Submitter: J. T. Wasson, UCLA.

Data from:
  MB99
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2006
Mass (g):195
Pieces:1
Class:Iron, ungrouped
Classifier:Wasson
Type spec mass (g):26
Type spec location:UCLA
Main mass:Birdsell
Comments:Submitted by Wasson
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Birdsell: Arizona Skies Meteorites, P.O. Box 2412, Flagstaff, AZ 86003, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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