"NWA 13543" CV3 Slice Carbonaceous Chondrite with Exceedingly rare CM Inclusion

Description

DESCRIPTION
"NWA 13543" CV3 Slice Carbonaceous Chondrite with Exceedingly rare CM Inclusion
TYPE:
"NWA 13543" CV3 Slice Carbonaceous Chondrite with Exceedingly rare CM like Inclusion
FALL/FIND LOCATION:
North West Africa
WEIGHT:
0.48 g (thin slice)
REF.:
CM
Observations:
The authenticity of this specimen is guaranteed
by the Geologist J.A.Poblador, member of International Meteorite Collectors Association IMCA 5681 and Global Meteorite Association G0043.
Northwest Africa 13543
Basic information
Name:
Northwest Africa 13543
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 13543
Observed fall:
No
Year found:
2020
Country:
(Northwest Africa)
Mass:
4.4 kg
Classification
history:
Recommended:
CV3
[explanation]
This is 1 of 557 approved meteorites (plus 1 unapproved name) classified as CV3.
[show all]
Search for other:
Carbonaceous chondrites
,
Carbonaceous chondrites (type 3)
,
CV chondrites
, and
CV-CK clan chondrites
Comments:
Approved 16 Dec 2020
Writeup
Writeup from MB 109:
Northwest Africa 13543
(NWA 13543)
(Northwest Africa)
Purchased: 2020
Classification: Carbonaceous chondrite (CV3)
History
: The meteorite was purchased from a dealer in Algeria.
Physical characteristics
: Many light-grayish to greenish fragments, some of them with patches of fusion crust.
Petrography
: The meteorite displays a grayish to dark-greenish interior and is composed of chondrules (mean diameter about 1 mm; up to 2.5 mm sized), large up to 1 cm sized CAIs, and olivine amoeboids embedded into a fine-grained, brownish-black matrix. Contains both, type I and type II chondrules. Several chondrules show reddish staining due to terrestrial alteration. Opaque phases are metal often occurring as blebs in chondrules, and sulfides. Both phases are sometimes altered to iron oxides.
Data from:
MB109
Table 0
Line 0:
Place of purchase:
Algeria
Date:
P 2020
Mass (g):
4400
Pieces:
many
Class:
CV3
Shock stage:
S2
Weathering grade:
moderate
Fayalite (mol%):
13.3±16.2 (0.5-43.0, n=15)
Ferrosilite (mol%):
1.3±0.3 (1.0-1.7, n=11)
Wollastonite (mol%):
1.3±0.3 (0.9-2.1, n=11)
Classifier:
A. Greshake, MNB
Type spec mass (g):
22.8
Type spec location:
MNB
Main mass:
Said Yousfi
Comments:
Submitted by Ansgar Greshake
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