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Northwest Africa 12287
Basic information Name: Northwest Africa 12287
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12287
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 33 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 532 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 11 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12287 (NWA 12287)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: Dark grayish individual without fusion crust.

Petrography: Brecciated carbonaceous chondrite composed of small chondrules (mean diameter about 230 μm), CAIs, and mineral fragments most of which are surrounded by fine-grained dust rims. The matrix is Fe-rich and contains abundant sulfides, calcite and phyllosilicates.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):33
Pieces:1
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):19.4±15.6 (0.4-45.7, n=20)
Ferrosilite (mol%):3.1±3.4 (0.6-8.7, n=14)
Wollastonite (mol%):1.2±0.6 (0.8-2.4, n=14)
Classifier:A. Greshake, MNB
Type spec mass (g):7
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. 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 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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