Meteoritical Bulletin: Entry for Northwest Africa 4700

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Northwest Africa 4700

Basic information

Name: Northwest Africa 4700
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4700
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass: 3.08 kg

Classification
history:

Meteoritical Bulletin:	MB 99	(2011)	Iron, IAB-sLL
Recommended:			Iron, IAB-sLL [explanation]

This is 1 of 35 approved meteorites classified as Iron, IAB-sLL. [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites

Comments:

Approved 21 Sep 2010

Writeup

Writeup from MB 99:

Northwest Africa 4700 (NWA 4700)

(Northwest Africa)

Purchased: 2007

Classification: Iron meteorite (IAB-sLL)

Petrography: Large schreibersite visible on top and bottom surfaces of 4 mm slice. No FeS observed. Kamacite contains abundant rhabdites. No silicates recognized. Bandwidth variable, 1.0 to 1.6 mm. Presumably purchased at same time as the very similar NWA 4703.

Geochemistry: Co (mg/g) 5.00, Ni (mg/g) 80.0, Ga (µg/g) 75.4, Ge (µg/g) 349, As (µg/g) 17.0, Ir (µg/g) 2.75, Au (µg/g) 1.84.

Submitter: J. T. Wasson, UCLA.

Data from:
  MB99
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2007
Mass (g):	3080
Pieces:	1
Class:	Iron, IAB-sLL
Classifier:	Wasson
Type spec mass (g):	38
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]

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

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