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Northwest Africa 11792
Basic information Name: Northwest Africa 11792
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11792
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 6 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 533 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 11792 (NWA 11792)

(Northwest Africa)

Purchased: 2017

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: Many small dark-grayish to black fragments, some partly covered with fusion crust.

Petrography: Carbonaceous chondrite composed of small (about 0.1-0.6 mm in diameter, mean about 250 μm) chondrules, chondrule pseudomorphs, mineral fragments and rare CAIs many of which surrounded by fine-grained dust rims set into abundant matrix. Matrix is Fe-rich and contains abundant Fe-sulfides and less abundant phyllosilicates and Ca-carbonates. Most of the Fe-rich olivines are strongly corroded.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017
Mass (g):6
Pieces:many
Class:CM2
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):17.5±15.3 (0.9-38.2, n=18)
Ferrosilite (mol%):3.6±0.4 (3.1-4.0, n=10)
Wollastonite (mol%):1.1±0.3 (0.8-1.9, n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):1.2
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, in preparation (2018)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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