header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Aug 2019
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 10907
Basic information Name: Northwest Africa 10907
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10907
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 33.8 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CM2
Recommended:  CM2    [explanation]

This is 1 of 529 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 6 Apr 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 10907 (NWA 10907)

Morocco

Purchased: 2016

Classification: Carbonaceous chondrite (CM2)

Petrography: The sample consists of about 20-30% chondrules, chondrule fragments, some small CAIs and 70-80% of a phyllosilicate-rich matrix (as indicated by low analytical totals) and opaques (mainly sulfides and minor metals). Most chondrules have a size of about 200-400 μm and many are surrounded by fine-grained, phyllosilicates-rich dust rims. Randomly selected olivines analyzed in chondrules and chondrule fragments revealed a mean composition of Fa17.2±19.5 with a range of Fa0.4-59.0. Most low-Ca pyroxene is enstatite (Fs<2), but also some low Ca-pyroxene with high Fs-content exists (e.g., Fs16). The olivine shows undulatory extinction. Thus, the rock is very weakly shocked (S2). The sample is moderately weathered and about half of the metal has been oxidized.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2016
Mass (g):33.8
Pieces:2
Class:CM2
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):17.2±19.5 (0.4-59.0, n=34)
Ferrosilite (mol%):3.4±4.1 (0.9-15.6, n=14)
Wollastonite (mol%):1.4 (0.3-3.7, n=14)
Classifier:Bischoff A. and Ebert S., IfP
Type spec mass (g):6.8
Type spec location:IfP
Main mass:Sergey Vasiliev
Finder:unknown
Comments:Sample SV2016.08.24-02, submitted by Samuel Ebert; submitted by Ebert S.
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
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
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1386 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

Direct link to this page