Meteoritical Bulletin: Entry for Northwest Africa 6349

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Northwest Africa 6349

Basic information

Name: Northwest Africa 6349
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6349
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 730 g

Classification
history:

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

This is 1 of 58 approved meteorites classified as Brachinite. [show all]
Search for other: Brachinites, Primitive achondrites

Comments:

Approved 31 Jan 2012

Writeup

Writeup from MB 100:

Northwest Africa 6349 (NWA 6349)

(Northwest Africa)

Purchased: Aug 2010

Classification: Primitive achondrite (Brachinite)

History: Purchased in 2010 August by Stefan Ralew from a Moroccan dealer in Erfoud.

Physical characteristics: A single 730 g, dark-brown stone.

Petrography: Protogranular texture. Composed predominantly of olivine with accessory clinopyroxene, chromite, altered kamacite, iron sulfide (probably pyrrhotite) and minor taenite (associated with Ni-bearing pyrrhotite). Orthopyroxene and plagioclase are absent. Tiny inclusions of orthopyroxene+pyrrhotite are present within olivine.

Geochemistry: Olivine Fa_34.1-34.6, Fe/Mn=74-75; clinopyroxene Fs_9.9-10.1Wo_46.5-46.4, Fe/Mn=47-68.

Classification: Achondrite (brachinite). This specimen possibly is paired with NWA 4882.

Specimens: A total of 21.5 g and one polished thin section are on deposit at UWS. Ralew holds the main mass.

Data from:
  MB100
  Table 1
  Line 1358:

Place of purchase:	Erfoud
Date:	P Aug 2010
Mass (g):	730
Pieces:	1
Class:	Brachinite
Shock stage:	low
Weathering grade:	moderate
Fayalite (mol%):	34.1-34.6
Ferrosilite (mol%):	9.9-10.1
Wollastonite (mol%):	46.5-46.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.5
Type spec location:	UWS
Main mass:	S. Ralew
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)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)

Catalogs:

References:

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

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)
DCOM
Gregor H.
John Lutzon
Mark Vornhusen

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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