header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 4 Jul 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 11468
Basic information Name: Northwest Africa 11468
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11468
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 20.7 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CM2
Recommended:  CM2    [explanation]

This is 1 of 540 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 3 Nov 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11468 (NWA 11468)

(Northwest Africa)

Purchased: 2017

Classification: Carbonaceous chondrite (CM2)

History: The meteorite was bought from a Moroccan meteorite dealer at the meteorite fair in Ensisheim, France.

Physical characteristics: Dark greyish individual with desert varnished surface.

Petrography: The meteorite is composed of chondrules (average apparent size 240 μm), chondrule pseudomorphs and rare CAIs set into an abundant fine-grained Fe-rich matrix of mainly phyllosilicates (as indicated by fibrous appearance), carbonates, and pyrrhotite. Most components are surrounded by fine-grained accretionary rims. Several chondrules show brownish stainig due to terrestrial alteration.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Ensisheim, France
Date:P 2017
Mass (g):20.7
Pieces:1
Class:CM2
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):25.7±23.5 (0.3-66.6, n=52)
Ferrosilite (mol%):7.8±5.8 (0.8-18.3, n=26)
Wollastonite (mol%):1.5±0.9 (0.4-3.4, n=26)
Classifier:A. Greshake, MNB
Type spec mass (g):5.4
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7320 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

Direct link to this page