Meteoritical Bulletin: Entry for Northwest Africa 2428

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Northwest Africa 2428

Basic information

Name: Northwest Africa 2428
This is an OFFICIAL meteorite name.
Abbreviation: NWA 2428
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass: 1650 g

Classification
history:

Meteoritical Bulletin:	MB 89	(2005)	IAB subclass HL
MetBase:	v. 7.1	(2006)	IAB-sHL
Recommended:			Iron, IAB-sHL [explanation]

This is 1 of 19 approved meteorites classified as Iron, IAB-sHL. [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites

Writeup

Writeup from MB 89:

Northwest Africa 2428

Northwest Africa

Found 2004

Iron (IAB)

A single mass with a total weight of 1650 grams was purchased in Erfoud, Morocco in July, 2004. Description and classification (John Wasson, UCLA): NWA 2428 is a plessitic octahedrite that has suffered some postshock recrystallization. It is dominated by long (~2 cm) schreibersite lamellae that are surrounded by swathing kamacite ~ 0.6 mm thick. Shock has caused fractures near most of the schreibersite lamellae. Weathering is minor. Cr 22 ug/g, Co 5.58 mg/g, Ni 117.7 mg/g, Cu 200 ug/g, Ga 16.8 ug/g, As 28.3 ug/g, Sb 180 ng/g, W 0.17 ug/g, Ir 1.09 ug/g, Au 2.646 ug/g. Based on this data the meteorite can be classified as a IAB, subclass HL, iron. Specimens: type specimen, 55 g UCLA, main mass, Birdsell.

Data from:
  MB89
  Table 7
  Line 242:

Place of purchase:	Erfoud
Date:	2004
Mass (g):	1650
Pieces:	1
Class:	Iron, IAB subclass HL
Classifier:	J. T. Wasson, UCLA
Type spec mass (g):	55
Main mass:	Birdsell

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. 89, MAPS 40, A201-A263 (2005)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Don Edwards

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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