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Lunar Meteorite

Northwest Africa 12393

northwestern Africa

 

from The Meteoritical Bulletin, No. 108

 

Northwest Africa 12393

 

northwestern Africa

Purchased: 2016

Mass: 1267.1 g

 

Lunar Meteorite (olivine gabbronorite breccia)

 

History: Purchased from Ahmad Buraga in Morocco, February 22, 2016.

 

Physical characteristics: Single stone, lacking fusion crust. Saw cut reveals a breccia of dark-brown and dark-green clasts with a few, scattered, light-colored, feldspathic fragments.

 

Petrography: (C. Agee, UNM) This meteorite is a chemically equilibrated, fragmental breccia with olivine, augite, low-Ca pyroxene, anorthitic plagioclase, and ubiquitous minor chromite. Following lunar petrologic nomenclature this is an olivine gabbronorite.

 

Geochemistry: (C. Agee, UNM) Olivine Fa 27.2±2.9, n=12; augite Fs14.0±1.4Wo39.8±1.8, Fe/Mn=50±7, n=4; low-Ca pyroxene Fs22.5±1.9Wo5.9±2.1, Fe/Mn=52±3, n=8; plagioclase An96.3±0.9Ab3.5±0.9Or0.2±0.0, n=7.

 

Classification: Lunar (olivine gabbronorite)

 

Specimens: 20.4 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.

 

Randy Says…

I have not studied this one.

 

More Information

Meteoritical Bulletin Database

NWA 12393

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