header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 19 Sep 2020
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:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Northwest Africa 12286
Basic information Name: Northwest Africa 12286
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12286
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 795 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  CK5
Recommended:  CK5    [explanation]

This is 1 of 162 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 11 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12286 (NWA 12286)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CK5)

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

Physical characteristics: Grayish to slightly greenish individual lacking any fusion crust.

Petrography: The meteorite displays a greyish to greenish interior and is predominantly composed of recrystallized Fe-rich olivine dominated matrix with scattered well defined chondrules. Cr-rich magnetite is abundant. More minor phases include intermediate plagioclase, low-Ca pyroxene, Ca-pyroxene and troilite; metal was not detected.

Geochemistry: olivine: Fa29.9±0.5, n=14, FeO/MnO=110.5±8.4; low-Ca pyroxene: Fs25.7±0.3Wo0.8±0.1, n=3; Ca-pyroxene: Fs7.0±0.4Wo47.5±0.3, n=3

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):795
Pieces:1
Class:CK5
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):29.9
Ferrosilite (mol%):25.7; 7.0
Wollastonite (mol%):0.8; 47.5
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum f├╝r Naturkunde, Invalidenstra├če 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7374 approved meteorites from (Northwest Africa) (plus 1957 unapproved names)

Direct link to this page