header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 7 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 11793
Basic information Name: Northwest Africa 11793
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11793
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 10.1 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (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 26 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11793 (NWA 11793)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CM2)

History: The meteorite was bought from a local meteorite dealer in Morocco.

Physical characteristics: Twelve small almost black fragments lacking fusion crust.

Petrography: Brecciated matrix-dominated carbonaceous chondrite with chondrules (mean diameter about 350 μm), mineral fragments and few CAIs. Some of the components are dust-mantled. Matrix is highly porous and composed of abundant Ca-carbonates and less abundant phyllosilicates and Fe-sulfides. Some rare FeNi metal grains are present.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):10.1
Pieces:12
Class:CM2
Shock stage:S2
Weathering grade:low
Fayalite (mol%):19.6±20.4 (0.7-54.5, n=18)
Ferrosilite (mol%):1.6±0.7 (0.9-2.9, n=16)
Wollastonite (mol%):1.1±0.1 (0.8-1.2, n=16)
Classifier:A. Greshake, MNB
Type spec mass (g):2.2
Type spec location:MNB
Main mass:Vincent Gira
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 Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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 7328 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

Direct link to this page