header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 16 Dec 2018
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 12212
Basic information Name: Northwest Africa 12212
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12212
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 7.5 g
Classification
  history:
Recommended:  Mesosiderite    [explanation]

This is 1 of 176 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 12 Nov 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12212 (NWA 12212)

(Northwest Africa)

Purchased: 2005

Classification: Mesosiderite

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by the Hollis Collection and donated to the Planetary Studies Foundation.

Petrography: (A. Irving and S. Kuehner, UWS) Aggregate of predominantly kamacite (containing wispy regions of taenite), low-Ca pyroxene and anorthite together with accessory Mg-merrillite, schreibersite and minor troilite.

Geochemistry: Low-Ca pyroxene (Fs32.7-32.9Wo4.2-5.1, FeO/MnO = 21-28, N = 3), anorthite (An90.8-94.4Or0.9-0.8, N = 2).

Classification: Mesosiderite.

Specimens: The entire specimen polished on one side is at PSF.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):7.5
Pieces:1
Class:Mesosiderite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):32.7-32.9
Wollastonite (mol%):4.2-5.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):7.5
Type spec location:PSF
Main mass:PSF
Comments:Work name E511; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
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 6559 approved meteorites from (Northwest Africa) (plus 2021 unapproved names)

Direct link to this page