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Last update: 13 Nov 2018
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Northwest Africa 12186
Basic information Name: Northwest Africa 12186
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12186
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 682 g
Classification
  history:
Recommended:  Pallasite    [explanation]

This is 1 of 47 approved meteorites classified as Pallasite.   [show all]
Search for other: Metal-rich meteorites, Pallasites
Comments: Approved 9 Nov 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12186 (NWA 12186)

(Northwest Africa)

Purchased: 2018

Classification: Pallasite

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

Physical characteristics: Brownish individual lacking any fusion crust.

Petrography: The meteorite is composed of typically 5 mm sized brownish olivine set into abundant and well preserved FeNi metal matrix. Ni-poor regions contain about 5 wt% and Ni-rich regions up to 31.6 wt% Ni.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2018
Mass (g):682
Pieces:1
Class:Pallasite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):12.9±0.1 (n=13)
Classifier:A. Greshake, MNB
Type spec mass (g):22.5
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Algeria; 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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6503 approved meteorites from (Northwest Africa) (plus 2020 unapproved names)

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