header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Sep 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 12806
Basic information Name: Northwest Africa 12806
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12806
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 3.19 kg
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 514 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 18 Aug 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12806 (NWA 12806)

(Northwest Africa)

Purchased: 2019

Classification: Ureilite

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

Physical characteristics: Brownish fragment without fusion crust.

Petrography: The meteorite shows a cumulate texture of up to 1.5 mm sized and mostly elongated olivine and pigeonite grains. It contains flaky graphite; olivine displays characteristic reduced rims.

Geochemistry: reduced rims in olivine: Fa2.1-6.1; olivine contains 0.73±0.04 wt% Cr2O3 and 0.40±0.01 wt% CaO

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Agadir, Morocco
Date:P 2019
Mass (g):3185
Pieces:1
Class:Ureilite
Shock stage:S2
Weathering grade:low
Fayalite (mol%):20.9±0.1 (n=13)
Ferrosilite (mol%):17.4±0.3 (n=16)
Wollastonite (mol%):9.6±0.1 (n=16)
Classifier:A. Greshake, MNB
Type spec mass (g):24.7
Type spec location:MNB
Main mass:Mateusz Szyszka
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 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

Direct link to this page