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Lunar Meteorite

Northwest Africa 11886

northwestern Africa

 

from The Meteoritical Bulletin, No. 107

 

Northwest Africa 11886

 

Northwestern Africa

Find: 2018

Mass: 36 g

 

Lunar Meteorite (fragmental breccia)

 

History: Bought in Erfoud, Morocco, in March 2018.

 

Physical characteristics: Cut surface reveals a gray interior with light grey and white clasts.

 

Petrography: (J. Gattacceca, CEREGE) Igneous fragmental breccia. Main minerals are pyroxene and plagioclase with typical grain size of 300 μm. Other minerals include olivine, chromite, troilite, silica polymorph (to 200 μm), ilmenite, rare metal.

 

Geochemistry: Pyroxene Fs44.4±6.0Wo22.9±9.0, FeO/MnO=67.3±12.4 (N=5). Plagioclase An92.7Ab7.2Or0.1 (N=2). Olivine Fa87.8, FeO/MnO=109 (N=1).

 

Classification: Lunar, fragmental breccia

 

Specimens: 7.5 g at CEREGE. Main mass with Labenne

 

Randy Says…

I have not studied this one. The plagioclase composition is more albitic than is typical of feldspathic lunar meteorites.

 

More Information

Meteoritical Bulletin Database

NWA 11886

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: 6 August 2018