Meteorite NWA 14967 Achondrite Ureilite Primitive achondrite meteorite

Description

NWA 14967
PRIMITIVE
ACHONDRIT
UREILITE
METEORITE
FOUND IN MARCH 2022
IN ALGERIA
8.3 GRAM
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Ureilite meteorite are
named after the
Novo-Urei
, Russia, fall of 1886, are ultramafic achondrites that contain interstitial carbon as graphite or diamond. The majority consist of olivine + uninverted pigeonite. In a few, the pyroxene is augite and/or orthopyroxene instead. In addition, about 10% of ureilites are polymict breccias, containing a few percent of feldspathic material in addition to typical ureilitic components.
OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASE
Northwest Africa 14967
Basic information
Name:
Northwest Africa 14967
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 14967
Observed fall:
No
Year found:
2022
Country:
(Northwest Africa)
Mass:
3.49 kg
Classification
history:
Recommended:
Ureilite
Comments:
Approved 20 Jun 2022
Writeup
Writeup from MB 111:
Northwest Africa 14967
(NWA 14967)
(Northwest Africa)
Purchased: 2022 Mar
Classification: Ureilite
History
: Purchased by Mbark Arjdal in March 2022 from an Algerian dealer.
Petrography
: (A. Irving,
UWS
and P. Carpenter,
WUSL
) Protogranular aggregate (mean grainsize ~0.3 mm) of olivine and pigeonite with accessory low-Ca pyroxene, subcalcic augite, graphite, kamacite and sulfides (Cr-troilite and daubreelite in exsolution relationship). Olivine grains have reduced magnesian rims containing fine blebby Fe metal (altered in part to Fe oxides).
Geochemistry
: Olivine cores (Fa
11.7-21.7
, Cr
2
O
3
0.59-0.77 wt.%, CaO 0.32-0.34 wt.%, N = 3), olivine rims (Fa
1.3-3.6
, N = 3), pigeonite (Fs
16.4-18.6
Wo
6.8-7.1
, Al
2
O
3
0.64-0.93 wt.%, Cr
2
O
3
1.0-1.1 wt.%, TiO
2
0.06-0.09 wt.%, N = 4), low-Ca pyroxene (Fs
2.6
Wo
1.3
; Fs
7.5
Wo
4.5
; N = 2), subcalcic augite (Fs
3.4
Wo
28.6
).
Classification
: Ureilite.
Specimens
: 31.3 g including one polished thin section at
UWB
; remainder with Mr. M. Arjdal.
Data from:
MB111
Table 0
Line 0:
Place of purchase:
Algeria
Date:
P 2022 Mar
Mass (g):
3487
Pieces:
many
Class:
Ureilite
Shock stage:
high
Weathering grade:
low
Fayalite (mol%):
20.6-21.7; 1.3-3.6
Ferrosilite (mol%):
16.4-18.6; 2.6-7.5; 3.4
Wollastonite (mol%):
6.8-7.1; 1.3-4.5; 28.6
Classifier:
A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):
31.3
Type spec location:
UWB
Main mass:
M. Arjdal
Comments:
Work name Arj ZM 333; 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)
WUSL
: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB
: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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 8606 approved meteorites from
(Northwest Africa)
(plus 1884 unapproved names)
Also see:
This lists the most popular meteorites among people who looked up this meteorite.
Revision
history:
This lists important revisions made to data for this record.