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Northwest Africa 11841
Basic information Name: Northwest Africa 11841
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11841
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 2.2 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 499 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 4 Jul 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11841 (NWA 11841)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: Several small black fragments without fusion crust.

Petrography: Carbonaceous chondrite consisting of chondrule and CAI pseudomorphs and mostly corroded mineral grains set into abundant fine-grained matrix. Some components are surrounded by dust rims. Ferroan olivine and all pyroxene have been aqueously altered; only few forsteric olivines are unaltered. Matrix contains sulfides, phyllosilicates and some carbonates.

Geochemistry: Carbonates too small to be analyzed

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):2.2
Pieces:1
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):2.2±2.2 (0.4-5.4, n=15)
Classifier:A. Greshake, MNB
Type spec mass (g):0.44
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6407 approved meteorites from (Northwest Africa) (plus 2023 unapproved names)

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