header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 10 Jul 2019
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 12667
Basic information Name: Northwest Africa 12667
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12667
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 102.8 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 499 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 27 Jun 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12667 (NWA 12667)

(Northwest Africa)

Purchased: 2018

Classification: Ureilite

History: The meteorite was purchased from a local meteorite dealer in Nouakchott, Mauritania.

Physical characteristics: Dark-brownish individual lacking any fusion crust.

Petrography: The meteorite displays a medium-grained cumulate texture of predominant up to 1 mm sized olivine grains and less abundant pigeonite. Contains some graphites flakes; olivine displays characteristic reduced rims.

Geochemistry: reduced rims in olivine: Fa2.9-11.5; olivine contains 0.74±0.03 wt% Cr2O3 and 0.47±0.02 wt% CaO

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Nouakchott, Mauritania
Date:P 2018
Mass (g):102.8
Pieces:1
Class:Ureilite
Shock stage:moderate
Weathering grade:moderate
Fayalite (mol%):23.2±0.3 (n=11)
Ferrosilite (mol%):18.9±0.2 (n=12)
Wollastonite (mol%):11.8±0.1 (n=12)
Classifier:A. Greshake, MNB
Type spec mass (g):26.8
Type spec location:MNB
Main mass:R. Lenssen
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 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

Direct link to this page