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Northwest Africa 12674
Basic information Name: Northwest Africa 12674
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12674
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 20 g
Classification
  history:
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 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12674 (NWA 12674)

(Northwest Africa)

Purchased: 2019

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: Six black fragments partly covered with fusion crust.

Petrography: Brecciated carbonaceous chondrite composed of small chondrules (mean diameter about 220 μm), CAIs, and mineral fragments some of which are surrounded by fine-grained dust rims. Matrix constituents include phyllosilicates (low analytical totals: matrix analyses yield an average total of 90.0 wt%, 5 µm defocused beam, N=5), Ca-carbonates, and pyrrhotite.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2019
Mass (g):20
Pieces:6
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):21.3±19.3 (0.8-49.8, n=20)
Ferrosilite (mol%):1.3±0.7 (0.8-3.1, n=14)
Wollastonite (mol%):2.5±1.1 (0.9-3.5, n=14)
Classifier:A. Greshake, MNB
Type spec mass (g):4
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. 108, in preparation (2019)
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 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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