Meteoritical Bulletin: Entry for Northwest Africa 6868

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Northwest Africa 6868

Basic information

Name: Northwest Africa 6868
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6868
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 747 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	LL6
Recommended:			LL6 [explanation]

This is 1 of 2902 approved meteorites (plus 2 unapproved names) classified as LL6. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 29 Nov 2011

Writeup

Writeup from MB 100:

Northwest Africa 6868 (NWA 6868)

Northwest Africa

Purchased: 2011 Apr

Classification: Ordinary chondrite (LL6)

Petrography: Breccia composed of recrystallized, mostly poikiloblastic clasts containing rare relict chondrule fragments in a matrix of related debris. Constituent minerals are olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite and altered kamacite.

Geochemistry: Olivine Fa_30.4-30.5, orthopyroxene Fs_25.3-25.6Wo_2.7-3.1, clinopyroxene Fs_12.5-13.2Wo_40.5-39.8.

Data from:
  MB100
  Table 1
  Line 1520:

Place of purchase:	Agadir
Date:	P 2011 Apr
Mass (g):	747
Pieces:	1
Class:	LL6
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	30.4-30.5
Ferrosilite (mol%):	25.3-25.6
Wollastonite (mol%):	2.7-3.1
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	43.4
Type spec location:	UWS
Main mass:	J. Higgins
Comments:	JH11-1; 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)
Piotr gural100

Geography:

Coordinates:

Unknown.

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

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