header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 13 Nov 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 12183
Basic information Name: Northwest Africa 12183
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12183
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 167 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 475 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 9 Nov 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12183 (NWA 12183)

(Northwest Africa)

Purchased: 2018

Classification: Ureilite

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

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

Petrography: The meteorite shows a characteristic cumulate texture of up to 1 mm sized olivine and pigeonite grains. Olivine is enriched in Cr2O3 and displays typical reduced rims. The meteorite contains abundant flaky graphite.

Geochemistry: reduced rims in olivine: Fa5.1-11.0; olivine contains 0.67±0.18 wt% Cr2O3 and 0.31±0.02 wt% CaO

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):167
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):21.3±0.1 (n=13)
Ferrosilite (mol%):18.1±0.1 (n=13)
Wollastonite (mol%):8.9±0.1 (n=13)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Marcin Cimala
Comments:Morocco; 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)

Direct link to this page