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Northwest Africa 6838
Basic information Name: Northwest Africa 6838
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6838
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 51 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 523 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 20 Oct 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 6838 (NWA 6838)

(Northwest Africa)

Purchased: 2010

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite shows a light-brownish interior and is composed of abundant small chondrules, CAIs, and mineral fragments some of which surrounded by fine-grained dust rims set into a fine-grained matrix. Chondrules have a mean diameter of about 0.2 mm; few regions show brownish staining due to terrestrial weathering.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2010
Mass (g):51
Pieces:1
Class:CO3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):22.2±17.3 (0.7-49.7, n=33)
Ferrosilite (mol%):1.8±0.7 (1.2-3.8, n=10)
Wollastonite (mol%):1.3±0.8 (0.7-3.6, n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):11.6
Type spec location:MNB
Main mass:Hanno Strufe
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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