Meteorite NWA 14187 LL6 Chondrite meteorite main mass, rare meteorite

Description

NORTHWEST AFRICA 14187
(NWA14187)
This meteorite is officially classified & approved as NWA 14187
Classified and studied by world renowned and profoundly respected Dr Anthony J. Irving and team at University of Washington
NWA 14187
LL6 CHONDRITE METEORITE
FOUND IN JANUARY 2020
IN NIGER
MAIN MASS
523 GRAM
YOU ARE PURCHASING THE MAIN MASS OF NWA 14187
LL6 CHONDRITE METEORITE
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COMBINED WITH A SIGNED CERTIFICATE OF AUTHENTICITY
First class express delivery and provenance provided.
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OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASE
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Northwest Africa 14187
Basic information
Name:
Northwest Africa 14187
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 14187
Observed fall:
No
Year found:
2021
Country:
Niger
Mass:
548 g
Classification
history:
Recommended:
LL6
Comments:
Approved 4 Sep 2021
Writeup
Writeup from MB 110:
Northwest Africa 14187
(NWA 14187)
Niger
Purchased: 2021 Jan
Classification: Ordinary chondrite (LL6)
History
: Purchased by Mbark Arjdal in January 2021 from a dealer in Niger.
Petrography
: (A. Irving,
UWS
and J. Boesenberg,
BrownU
) Largely recrystallized with rare chondrule remnants. Accessory phases are troilite, stained kamacite, sodic plagioclase, chromite and chlorapatite.
Geochemistry
: Olivine (Fa
31.1±0.4
, range Fa
30.6-31.5
, N = 7), low-Ca pyroxene (Fs
25.3±0.7
Wo
2.1±0.1
, range Fs
24.6-26.4
Wo
1.9-2.2
, N = 6), augite (Fs
10.2
Wo
43.6
).
Classification
: Ordinary chondrite (LL6).
Specimens
: 20.2 g including one polished thin section at
UWB
; remainder with Mr. M. Arjdal.
Data from:
MB110
Table 0
Line 0:
Place of purchase:
Niger
Date:
P 2021 Jan
Mass (g):
548
Pieces:
1
Class:
LL6
Shock stage:
S2
Weathering grade:
W0/1
Fayalite (mol%):
31.1±0.4
Ferrosilite (mol%):
25.3±0.7
Wollastonite (mol%):
2.1±0.1
Classifier:
A. Irving, UWS, and J. Boesenberg, Brown U.
Type spec mass (g):
20.2
Type spec location:
UWB
Main mass:
M. Arjdal
Comments:
Work name Arj H23; submitted by A. Irving
Institutions
and collections
UWS
: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB
: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU
: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References:
Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:
Coordinates:
Unknown.
Statistics:
This is 1 of 80 approved meteorites from
Niger
(plus 3 unapproved names)
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Revision
history:
This lists important revisions made to data for this record.