Meteorite: Lunar feldspathic breccia NWA 15018 end cut 0.902 grams #666

Description

Meteorite: Lunar feldspathic breccia NWA 15018 end cut 0.902 grams #666
On Offer:
0.902 grams slice of NWA 15018
Type:
Lunar
Feldspathic Breccia
SEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW:
Northwest Africa 15018
Basic information
Name:
Northwest Africa 15018
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 15018
Observed fall:
No
Year found:
2022
Country:
(Northwest Africa)
Mass:
1200 g
Classification
history:
Recommended:
Lunar (feldsp. breccia)
This is 1 of 278 approved meteorites classified as Lunar (feldsp. breccia).
Search for other: Lunar meteorites
Comments:
Approved 23 Jul 2022
Writeup
Writeup from MB 111:
Northwest Africa 15018
(NWA 15018)
(Northwest Africa)
Purchased: Apr 2022
Classification: Lunar meteorite (feldspathic breccia)
History
: The meteorite was purchased from a meteorite dealer in Temara, Morocco.
Physical characteristics
: Many small grayish fragments without fusion crust.
Petrography
: The meteorite displays a dark grayish interior and is a polymict breccia predominantly composed of up to 3 mm sized feldspathic and melt clasts plus mineral fragments consolidated by abundant finely recrystallized feldspathic matrix. Dominant minerals are olivine, augite, pigeonite, and calcic plagioclase. Minor phases are silica, ilmenite and FeS.
Geochemistry
: olivine: Fa
27.7±1.7
(Fa
26.3-30.6
, FeO/MnO=87±4, n=12); augite: Fs
17.4±1.2
Wo
34.9±1.4
(Fs
15.3-19.1
Wo
33.2-37.5
, FeO/MnO=47±4, n=9); pigeonite: Fs
25.3±1.6
Wo
9.3±2.2
(Fs
23.0-28.4
Wo
5.9-13.3
, FeO/MnO=53±5, n=11); calcic plagioclase: An
97.9±0.1
(An
97.6-98.1
, n=10)
Data from:
MB111
Table 0
Line 0:
Place of purchase:
Temara, Morocco
Date:
P Apr 2022
Mass (g):
1200
Pieces:
many
Class:
Lunar (feldsp. breccia)
Shock stage:
moderate
Weathering grade:
moderate
Fayalite (mol%):
27.7
Ferrosilite (mol%):
17.4; 25.3
Wollastonite (mol%):
34.9; 9.3
Classifier:
A. Greshake, MNB
Type spec mass (g):
21.6
Type spec location:
MNB
Main mass:
Said Yousfi
Comments:
Submitted by Ansgar Greshake
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