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Northwest Africa 12673
Basic information Name: Northwest Africa 12673
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12673
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 26 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 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12673 (NWA 12673)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: Many black fragments some of which are partly covered with fusion crust.

Petrography: The meteorite displays a black interior and is composed of small (mean diameter about 250 μm) chondrules, mineral fragments and CAIs set into an abundant fine-grained matrix. Many components are surrounded by fine-grained dust rims. Matrix is Fe-rich and contains abundant Fe-sulfides and Ca-carbonates and less abundant phyllosilicates (low analytical totals: matrix analyses yield an average total of 90.4 wt%, 5 µm defocused beam, N=5)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):26
Pieces:many
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):19.3±21.8 (0.8-59.3, n=21)
Ferrosilite (mol%):1.0±0.1 (0.8-1.2, n=17)
Wollastonite (mol%):1.2±0.2 (1.0-1.9, n=17)
Classifier:A. Greshake, MNB
Type spec mass (g):5.2
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. 108, in preparation (2019)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7048 approved meteorites from (Northwest Africa) (plus 1998 unapproved names)

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