Meteorite NWA 15243 LL3 Chondrite meteorite, type 3 meteorite from outer space

Description

NORTHWEST AFRICA 15243
(NWA15243)
This meteorite is officially classified & approved as NWA 15243
Classified and studied by world renowned and profoundly respected Dr Anthony J. Irving and team at University of Washington
NWA 15243
LL3
CHONDRITE METEORITE
FOUND IN FEBRUARY 2022
IN MALI
89.8 GRAM
GUARANTEED AUTHENTICITY
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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
Northwest Africa 15243
Basic information
Name:
Northwest Africa 15243
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 15243
Observed fall:
No
Year found:
2022
Country:
Mali
Mass:
2.69 kg
Classification
history:
Recommended:
LL3
Comments:
Approved 5 Sep 2022
Writeup
Writeup from MB 111:
Northwest Africa 15243
(NWA 15243)
Mali
Purchased: 2022 Feb
Classification: Ordinary chondrite (LL3)
History
: Purchased by Mbark Arjdal in February 2022 from a Malian dealer.
Petrography
: (A. Irving,
UWS
and J. Boesenberg,
BrownU
) Well-formed unequilibrated chondrules (apparent diameter 1240 ± 550 µm, N = 25) containing devitrified glass are set in a fine grained matrix containing altered kamacite, augite, chromite and troilite.
Geochemistry
: Olivine (Fa
17.3±8.9
, range Fa
2.0-34.4
, N = 16; Cr
2
O
3
in ferroan olivine 0.03-0.22 wt.%, mean 0.11 wt.%, sd 0.07 wt.%, N = 23), low-Ca pyroxene (Fs
20.4±10.8
Wo
1.7±0.9
, range Fs
8.3-31.0
Wo
1.0-3.4
, N = 7), subcalcic augite (Fs
7.1
Wo
32.3
; Fs
19.5
Wo
20.0
; N = 2). Magnetic susceptibility log χ (× 10
-9
m
3
/kg) = 3.30.
Classification
: Ordinary chondrite (LL3).
Specimens
: 39.7 g including one polished thin section at
UWB
; remainder with Mr. M. Arjdal.
Data from:
MB111
Table 0
Line 0:
Place of purchase:
Mali
Date:
P 2022 Feb
Mass (g):
2685
Pieces:
many
Class:
LL3
Shock stage:
S2
Weathering grade:
W2
Fayalite (mol%):
17.3±8.9
Ferrosilite (mol%):
20.4±10.8
Wollastonite (mol%):
1.7±0.9
Magnetic suscept.:
3.30
Classifier:
A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):
39.7
Type spec location:
UWB
Main mass:
M. Arjdal
Comments:
Work name Arj ZM 803; 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. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:
Coordinates:
Unknown.
Statistics:
This is 1 of 71 approved meteorites from
Mali
(plus 1 unapproved name)
Also see:
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Revision
history:
This lists important revisions made to data for this record.
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