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.

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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: 30 g

Classification
history:

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

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 (Fa_32.6-32.7, FeO/MnO = 116-120, N = 3), orthopyroxene (Fs_26.7-26.8Wo_0.6, N = 3), clinopyroxene (Fs_8.8-10.2Wo_46.8-46.9, N = 2).

Classification: Carbonaceous chondrite (CK4).

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

Data from:
MB106
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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