*** Meteorite NWA 10839 (CK6) - 6.0 g ***

Description

SV-meteorites
Northwest Africa 10839 (CK6)
Slice. Weight 6.0 grams
Northwest Africa 10839
Basic information
Name:
Northwest Africa 10839
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 10839
Observed fall:
No
Year found:
2016
Country:
(Northwest Africa)
Mass:
457 g
Classification
history:
Meteoritical Bulletin:
MB 105
(2016)
CK6
Recommended:
CK6
This is 1 of 65 approved meteorites classified as CK6.
Comments:
Approved 22 Oct 2016
Writeup
Writeup from MB 105:
Northwest Africa 10839
(NWA 10839)
(Northwest Africa)
Purchased: 2016 Jun
Classification: Carbonaceous chondrite (CK6)
History
: Purchased by Aziz Habibi in June 2016 from a Mauritanian dealer.
Petrography
: (A. Irving and S. Kuehner,
UWS
) Sparse, separated chondrules occur within a recystallized matrix containing relatively abundant, orange-stained Cr-magnetite. Minor calcite veinlets are present.
Geochemistry
: Olivine (Fa
27.8-28.3
, N = 3), orthopyroxene (Fs
24.7-25.1
Wo
0.6-0.9
, Al
2
O
3
= 5.1-5.8 wt.%, N = 3), clinopyroxene (Fs
12.0
Wo
40.9
; Fs
12.5
Wo
48.3
; N = 2).
Classification
: Carbonaceous chondrite (anomalous CK6). The orthopyroxene in this specimen is unusually aluminum-rich (almost 6 wt.% Al
2
O
3
) compared with that in typical CK chondrites.
Specimens
: 24.4 g including one polished thin section at
UWB
; remainder with Mr. A. Habibi.
Data from:
MB105
Place of purchase:
Mauritania
Date:
P 2016 Jun
Mass (g):
457
Pieces:
1
Class:
CK6
Shock stage:
S2
Weathering grade:
moderate
Fayalite (mol%):
27.8-28.3
Ferrosilite (mol%):
24.7-25.1
Wollastonite (mol%):
0.6-0.9
Classifier:
A. Irving and S. Kuehner, UWS
Type spec mass (g):
24.4
Type spec location:
UWB
Main mass:
A. Habibi
Comments:
AH212; submitted by A. Irving
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