E&PS_WU_logo.jpg

Lunar Meteorite

Northwest Africa 11898

Mali

 

from The Meteoritical Bulletin, No. 107

 

Northwest Africa 11898

 

Mali

Purchased: 2018

Mass: 767.8 g

 

Lunar Meteorite (feldspathic breccia)

 

History: Purchased in March 2018 by Dustin Dickens from a meteorite dealer in Mali.

 

Physical characteristics: Several identical appearing dark stones covered partially with a milky-green fusion crust. Broken surface reveals a fragmental breccia with numerous white feldspathic clasts set in a dark colored ground mass.

 

Petrography: (C. Agee, UNM) This meteorite is a breccia of primarily feldspathic clasts, with lesser amounts of olivine and pyroxene fragments. The shock melt composition has a very high alumina content, vesicles occur throughout.

 

Geochemistry: (C. Agee, UNM) olivine Fa25.0±6.4, Fe/Mn=90±5, n=8; pigeonite Fs31.0±3.6Wo8.1±3.6, Fe/Mn=58±4, n=6; high-Ca pyroxene Fs22.3±3.7Wo35.0±4.7, Fe/Mn=52±5, n=4; plagioclase An96.3±0.7Ab3.5±0.7Or0.2±0.0, n=6; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=43.1±0.6, TiO2=0.12±0.03, Al2O3=31.3±1.2, Cr2O3=0.03±0.01, MgO=2.0±0.5, FeO=2.5±0.5, MnO=0.03±0.01, CaO=18.0±0.4, Na2O=0.36±0.01, K2O=0.04±0.00 (all wt%), n=4.

 

Classification: Lunar feldspathic breccia

 

Specimens: 21.6 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass.

 

Randy Says…

I have not studied this one.

 

More Information

Meteoritical Bulletin Database

NWA 11898

References

 

 

Back to: Lunar Meteorites | List of Lunar Meteorites | Top of Page

 

 

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: 4 September 2018