Meteoritical Bulletin: Entry for Northwest Africa 6947

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Northwest Africa 6947

Basic information

Name: Northwest Africa 6947
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6947
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 115.8 kg

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	H5
Recommended:			H5 [explanation]

This is 1 of 11150 approved meteorites (plus 22 unapproved names) classified as H5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 21 Feb 2012

Writeup

Writeup from MB 100:

Northwest Africa 6947 (NWA 6947)

(Northwest Africa)

Purchased: Jun 2011

Classification: Ordinary chondrite (H5)

Petrography: Sparse small chondrules in a largely recrystallized matrix. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, fairly abundant altered kamacite, Mg-bearing merrillite, troilite, pentlandite and chromite.

Geochemistry: Olivine (Fa_18.9±0.0), orthopyroxene (Fs_16.7-16.9Wo_1.3-0.8), clinopyroxene (Fs_5.6Wo_45.8).

Data from:
  MB100
  Table 1
  Line 1548:

Place of purchase:	Agadir
Date:	P Jun 2011
Mass (g):	115777
Pieces:	300
Class:	H5
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	18.9±0.0
Ferrosilite (mol%):	16.7-16.9
Wollastonite (mol%):	1.3-0.8
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	31.9
Type spec location:	UWS
Main mass:	David L. Ribeca
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)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
David L. Ribeca

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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