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Northwest Africa 12402
Basic information Name: Northwest Africa 12402
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12402
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 580 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 511 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 9 Feb 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12402 (NWA 12402)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CO3)

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

Physical characteristics: Brownish individual without fusion crust.

Petrography: The meteorite shows a dark brownish to almost black interior and is predominantly composed of abundant chondrules (mean diameter about 200 μm), CAIs, and mineral fragments set into a fine-grained matrix. Chondrules are highly unequilibrated and sometimes surrounded by fine-grained dust rims.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):580
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:low
Fayalite (mol%):22.9±20.4 (0.4-60.5, n=19)
Ferrosilite (mol%):1.5±0.3 (1.0-2.0, n=20)
Wollastonite (mol%):1.1±0.1 (0.9-1.5, n=20)
Classifier:A. Greshake, MNB
Type spec mass (g):23.4
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
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:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6709 approved meteorites from (Northwest Africa) (plus 2022 unapproved names)

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