Meteoritical Bulletin: Entry for Northwest Africa 4860

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Northwest Africa 4860

Basic information

Name: Northwest Africa 4860
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4860
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass: 26 kg

Classification
history:

Meteoritical Bulletin:	MB 96	(2009)	L4
Recommended:			L4 [explanation]

This is 1 of 2104 approved meteorites (plus 5 unapproved names) classified as L4. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 3 Mar 2009

Data from:
  MB96
  Table 2
  Line 7:

State/Prov/County:	Ste Marie aux Mines show, France
Date:	May-03
Mass (g):	26000
Pieces:	4
Class:	L4
Shock stage:	S6
Weathering grade:	W1
Fayalite (mol%):	23.7
Ferrosilite (mol%):	20.5
Wollastonite (mol%):	1.2
Classifier:	N. Jamsja, A. Ruzicka, and M. Hutson, Cascadia
Type spec mass (g):	307
Type spec location:	Cascadia
Main mass:	Thompson
Comments:	Heavily shocked chondrules/fragments surrounded by melt

Institutions
and collections

Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 96, MAPS 44, 1355-1397 (2009)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Mike Markowitz

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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