Meteoritical Bulletin: Entry for Northwest Africa 6699

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Northwest Africa 6699

Basic information

Name: Northwest Africa 6699
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6699
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 17.4 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	L-melt rock
Recommended:			L-melt rock [explanation]

This is 1 of 52 approved meteorites classified as L-melt rock. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 3 Dec 2014

Writeup

Writeup from MB 103:

Northwest Africa 6699 (NWA 6699)

(Northwest Africa)

Purchased: 2011 Jan

Classification: Ordinary chondrite (L, melt rock)

Petrography: Very fine grained with some relict chondrule remnants and dispersed larger, irregular grains of stained metal. Olivine, orthopyroxene, subcalcic augite, sodic plagioclase, kamacite and troilite.

Geochemistry: Olivine Fa_23.5-25.6, orthopyroxene Fs_17.9-18.7Wo_1.8-2.8, subcalcic augite Fs_14.3-14.7Wo_31.6-29.6.

Classification: Ordinary chondrite, L melt rock. Both olivine and orthopyroxene can show some compositional variation, which may be inherited from the precursor chondritic protolith and not homogenized during the brief duration of the shock melting process.

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2011 Jan
Mass (g):	17.4
Pieces:	1
Class:	L-melt rock
Shock stage:	S6
Weathering grade:	W1
Fayalite (mol%):	23.5-25.6
Ferrosilite (mol%):	17.9-18.7
Wollastonite (mol%):	1.8-2.8
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	3.5
Type spec location:	UWB
Main mass:	GHupé
Comments:	GH-387; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full

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Photos:

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

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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