Meteoritical Bulletin: Entry for Northwest Africa 6421

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Northwest Africa 6421

Basic information

Name: Northwest Africa 6421
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6421
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 88 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	Diogenite
Recommended:			Diogenite [explanation]

This is 1 of 522 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 24 Oct 2011

Writeup

Writeup from MB 100:

Northwest Africa 6421 (NWA 6421)

(Northwest Africa)

Purchased: 2010 Sep

Classification: HED achondrite (Diogenite)

Petrography: Five black fusion crusted stones. Monomict breccia composed mainly of randomly oriented single grains of orthopyroxene (containing chromite inclusions) plus sparse polycrystalline diogenite clasts in a coarse grained matrix of orthopyroxene, chromite, troilite and rare olivine and fresh metal.

Data from:
  MB100
  Table 1
  Line 1373:

Place of purchase:	Erfoud
Date:	P 2010 Sep
Mass (g):	88
Pieces:	5
Class:	Diogenite
Weathering grade:	low
Fayalite (mol%):	31.9
Ferrosilite (mol%):	25.4-26.6
Wollastonite (mol%):	3.3
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	17.6
Type spec location:	UWS
Main mass:	G. Fujihara
Comments:	Submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Auricular
bphd
Dirk Hohmann
Gregor H.

Geography:

Coordinates:

Unknown.

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

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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