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Northwest Africa 6908
Basic information Name: Northwest Africa 6908
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6908
Observed fall: No
Year found: 2010
Country: Western Sahara
Mass:help 52.7 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  CM2
Recommended:  CM2    [explanation]

This is 1 of 625 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 28 Jan 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 6908 (NWA 6908)

Western Sahara

Found: 15 Mar 2010

Classification: Carbonaceous chondrite (CM2)

History: One dark, roundish, almost complete stone of 52.68 g was found by an anonymous finder on March 15, 2010, in Western Sahara.

Petrography: In thin section the rock is dark, similar to other carbonaceous chondrites. The dark opaque material makes up an estimated 70-80 vol%. The chondrite contains a low abundance of small complete chondrules. Chondrule and mineral fragments are the most abundant coarse-grained components, which are surrounded by typical fine-grained accretionary rims.

Geochemistry: Olivine, Fa22±19 (range, Fa0-70); pyroxene, Fs15±20 (range, Fs0-52). Oxygen isotope composition (A. Pack, UGött) δ18O = 9.06; δ17O = 1.52; Δ17O = -3.232 (all per mil).

Data from:
  MB102
  Table 0
  Line 0:
Date:15 Mar 2010
Mass (g):52.68
Pieces:1
Class:CM2
Weathering grade:medium
Fayalite (mol%):22±19 (0-70)
Ferrosilite (mol%):15±20 (0-52)
Classifier:A. Bischoff, M. Matthes, E. Haiderer, IfP
Type spec mass (g):10.5
Type spec location:IfP
Main mass:unknown
Finder:anonymous
Comments:Submitted by Addi Bischoff
Plots: O isotopes:  
Institutions
   and collections		 IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Haiderer: Erich Haiderer Laboratory, P.O. Box 88, A-1140 Vienna, Austria (private address; updated 7 Jan 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Geography:

Western Sahara
Coordinates:Unknown.

Statistics:
     This is 1 of 270 approved meteorites from Western Sahara (plus 20 unapproved names)

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