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Lunar Meteorite

Northwest Africa 12427

northwestern Africa

 

from The Meteoritical Bulletin, No. 108

 

Northwest Africa 12427

 

northwestern Africa

Find: 2017

Mass: 3649 g

 

Lunar Meteorite (Lunar meteorite (feldspathic breccia))

 

History: Purchased in November 2017 in Nouakchott, Mauritania. Reportedly found in northeastern Western Sahara September 2017.

 

Physical characteristics: Single stone, no fusion crust; saw cut reveals a breccia with white feldspathic clasts set in a dark gray groundmass. Some of the feldspathic clasts appear to be aligned suggesting a mild deformation fabric.

 

Petrography: (C. Agee, UNM) Microprobe examination shows fragmental breccia with many anorthositic olivine gabbro clasts set in fine-grained, cataclastic groundmass. Melt veins and vesicles are present throughout.

 

Geochemistry: (C. Agee, UNM) Olivine Fa42.7±6.8, Fe/Mn=94±5, n=15; clinopyroxene Fs31.4±6.7Wo15.7±6.4, Fe/Mn=54±5, n=14; plagioclase An96.9±0.2, n=6; shock melt veins (proxy for bulk composition) SiO2=46.5±2.5, TiO2=0.30±0.15, Cr2O3=0.15±0.10, Al2O3=27.9±6.3, MgO=5.2±3.4, FeO=5.5±3.2, MnO=0.08±0.06, CaO=15.6±2.6, Na2O=0.27±0.07, K2O=0.05±0.02 (all wt%), n=6.

 

Classification: Lunar, feldspathic breccia

 

Specimens: 20.2 g on deposit at UNM, DPitt holds the main mass.

 

Randy Says…

I have not studied this one.

 

More Information

Meteoritical Bulletin Database

NWA 12427

References

 

 

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Prepared by: Randy L. Korotev

Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don’t contact me about the meteorite you think that
you’ve found until you read this and this.

 

e-mailkorotev@wustl.edu

Last revised: 11 February 2019