Meteoritical Bulletin: Entry for Northwest Africa 6274

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Northwest Africa 6274

Basic information

Name: Northwest Africa 6274
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6274
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 58.1 g

Classification
history:

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

This is 1 of 436 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 19 Sep 2011

Writeup

Writeup from MB 100:

Northwest Africa 6274 (NWA 6274)

(Northwest Africa)

Purchased: 2010 Feb 12

Classification: HED achondrite (Howardite)

Petrography: (A. Irving and S. Kuehner, UWS): Polymict breccia composed mostly of basaltic eucrite clasts and debris, with >10 vol.% of diogenite material.

Geochemistry: Diogenitic orthopyroxene (Fs_20.9Wo_1.6; FeO/MnO = 34.7), pigeonite (Fs_31.0Wo_6.1; Fs_55.5Wo_17.0; FeO/MnO = 27.2-27.7), augite (Fs_22.3Wo_44.1; Fs_30.7Wo_36.1; FeO/MnO = 28.2-30.5), ferroan olivine (Fa_66.3-67.7; FeO/MnO = 42.7-53.5), calcic plagioclase, chromite, ilmenite, and troilite.

Data from:
  MB100
  Table 1
  Line 1321:

Origin or pseudonym:	Mali
Place of purchase:	Bruegg, Switzerland
Date:	P 2010 Feb 12
Mass (g):	58.1
Pieces:	1
Class:	Howardite
Fayalite (mol%):	66.3-67.7
Ferrosilite (mol%):	20.9
Wollastonite (mol%):	1.6
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	11.7
Type spec location:	UWS
Main mass:	M. Jost
Comments:	SJS 10010; 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)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)

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)
eraserhead
METEORITES AUSTRALIA
Solar Anamnesis
Space Jewels

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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