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Northwest Africa 12683
Basic information Name: Northwest Africa 12683
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12683
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 111 g
Classification
  history:
Recommended:  CK5    [explanation]

This is 1 of 157 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 27 Jun 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12683 (NWA 12683)

(Northwest Africa)

Purchased: 2016

Classification: Carbonaceous chondrite (CK5)

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

Physical characteristics: Single grayish to greenish rock with some fusion crust.

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

Geochemistry: olivine: Fa30.6±0.2 (FeO/MnO=134±21, n=13); low-Ca pyroxene: Fs26.0±0.5Wo0.9±0.1, n=11

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):111
Pieces:1
Class:CK5
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):30.6
Ferrosilite (mol%):26.0
Wollastonite (mol%):0.9
Classifier:A. Greshake, MNB
Type spec mass (g):21.1
Type spec location:MNB
Main mass:anonymous
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 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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