2.63 grams 36mm NWA 13951 "starry night" Lunar meteorite feldspathic breccia COA

Description

Northwest Africa 13951
Basic information
Name:
Northwest Africa 13951
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 13951
Observed fall:
No
Year found:
2021
Country:
Mauritania
Mass:
4.3 kg
Classification
history:
Recommended:
Lunar (feldsp. breccia)
This is 1 of 236 approved meteorites classified as Lunar (feldsp. breccia).
Search for other:
Comments:
Approved 29 May 2021
Writeup
Writeup from MB 110:
Northwest Africa 13951
(NWA 13951)
Mauritania
Purchased: 2021
Classification: Lunar meteorite (feldspathic breccia)
History
: Purchased in January 2021 by Mark Lyon from a dealer in Mauritania.
Physical characteristics
: Two identically appearing masses (2.5 and 1.8 kg) found together. Saw cut surface shows numerous clasts with gray and white grains, bounded by abundant darker gray melt veins. No fusion crust is present.
Petrography
: (C. Agee,
UNM
) Electron microprobe analysis and imaging reveal a very fine-grained brecciated mix of plagioclase, pyroxene, olivine and melt. Numerous Fe-Ni metal grains are scattered throughout, some as large as 1 mm.
Geochemistry
: (C. Agee,
UNM
) Plagioclase An
96.5±1.7
Ab
4.0±1.7
Or
0.4±0.2
, n=6; pigeonite Fs
31.9±4.0
Wo
9.7±3.5
, Fe/Mn=52±4, n=9; augite Fs
14.9
Wo
38.2
, Fe/Mn=49, n=1; subcalcic ferroaugite Fs
45.4±2.6
Wo
29.5±5.2
, Fe/Mn=59±1, n=3; olivine Fa
34.3±6.3
, Fe/Mn=96±9, n=13; metal Fe=93.4±2.0, Ni=6.6±1.7 wt%, n=4.
Classification
: Lunar feldspathic breccia
Specimens
: 21.5 g on deposit at
UNM
, Sean Mahoney and Juan Poblador hold the 2.5 kg mass, Paul Hoyt holds 740 g of the 1.8 kg mass.
Data from:
MB110
Table 0
Line 0:
Place of purchase:
Mauritania
Date:
P 2021
Mass (g):
4.3 kg
Pieces:
2
Class:
Lunar (feldsp. breccia)
Shock stage:
high
Weathering grade:
moderate
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