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31.71g CK4 Carbonaceous Chondrite End Cut I NWA 11131

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  • $ 950.00

On Offer: 31.71g end cut of CK4 | NWA 11131 
Type: CK4 Carbonaceous Chondrite
Origin: Morocco
Official name: NWA 11131
Description: 31.71 gram end cut of CK4 carbonaceous chondrite NWA 11131
What you get: 31.71 gram CK4 NWA 11131 Meteorite Specimen as Shown, Membrane Storage/Display Box, & signed Certificate of Authenticity.
I offer a 100% no questions asked 30 day return policy.
Northwest Africa 11131
Basic information Name: Northwest Africa 11131
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11131
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 30 g
Meteoritical Bulletin:   MB 106   (2018)   CK4
Recommended:   CK4  [explanation]

This is 1 of 108 approved meteorites classified as CK4.  [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 26 Apr 2017
Writeup from MB 106:

Northwest Africa 11131 (NWA 11131)

(Northwest Africa)

Purchased: 2016

Classification: Carbonaceous chondrite (CK4)

History: Purchased by Dustin Dickens in 2016 from a dealer in Amellagou Ksar Ait’ Youb, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-delineated chondrules containing Cr-magnetite are set in a finer grained matrix composed mainly of mafic silicates with Cr-magnetite, altered metal, pyrite and minor barite. One CAI composed of anorthite+olivine+pleonaste was observed in the studied thin section.

Geochemistry: Olivine (Fa32.6-32.7, FeO/MnO = 116-120, N = 3), orthopyroxene (Fs26.7-26.8Wo0.6, N = 3), clinopyroxene (Fs8.8-10.2Wo46.8-46.9, N = 2).

Classification: Carbonaceous chondrite (CK4).

Specimens: 6.1 g including one polished thin section at UWB; remainder with Mr. D. Dickens.

Data from:
  Table 0
  Line 0:
Place of purchase: Amellagou Ksar Ait' Youb, Morocco
Date: P 2016
Mass (g): 30
Pieces: 1
Class: CK4
Shock stage: S2
Weathering grade: low
Fayalite (mol%): 32.6-32.7
Ferrosilite (mol%): 26.7-26.8
Wollastonite (mol%): 0.6-0.7
Classifier: A. Irving and S. Kuehner, UWS
Type spec mass (g): 6.1
Type spec location: UWB
Main mass: D. Dickens
Comments: DD16-5; submitted by A. Irving

ID: NWA1113120_31.71_01

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