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Northwest Africa 12184
Basic information Name: Northwest Africa 12184
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12184
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 220 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  CM2
Recommended:  CM2    [explanation]

This is 1 of 636 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 Oct 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12184 (NWA 12184)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: Almost black individual partly covered with fusion crust.

Petrography: Brecciated carbonaceous chondrite composed of chondrules (mean diameter about 0.3 mm), chondrule pseudomorphs, CAIs, and mineral fragments set into abundant Fe-rich matrix. Many of the components are surrounded by fine-grained dust rims. The fine-grained almost black meteorite matrix consists of abundant Ca-carbonates, sulfides and phyllosilicates.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2018
Mass (g):220.0
Pieces:1
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):13.6±16.6 (0.2-38.2, n=23)
Ferrosilite (mol%):1.2±0.1 (1.1-1.5, n=10)
Wollastonite (mol%):1.2±0.1 (1.0-1.3, n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Marcin Cimala
Comments:Algeria; 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, MAPS 55, 460-462
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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