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Lunar Meteorite

Northwest Africa 12422

northwestern Africa

 

from The Meteoritical Bulletin, No. 108

 

Northwest Africa 12422

 

northwestern Africa

Find: 2018 October

Mass: 42.8 g

Lunar Meteorite (feldspathic breccia)

 

History: Found in October 2018 in the Assa-Zag region of Morocco and purchased by Craig Zlimen in November 2018 from a dealer in Zagora, Morocco.

 

Petrography: (A. Irving and S. Kuehner, UWS) Very fine grained assemblage of mineral clasts (including anorthite, orthopyroxene, augite, rare zoned olivine) in a partly vitreous ("swirly") and sparsely vesicular matrix containing kamacite, chromite and troilite.

 

Geochemistry: Anorthite (An96.7-97.4Or0.1, N = 2), orthopyroxene (Fs24.6-26.6Wo3.9-4.1, FeO/MnO = 54-58, N = 2), pigeonite (Fs36.6Wo9.7, FeO/MnO = 71), augite (Fs15.3Wo40.1, FeO/MnO = 38), olivine (core Fa15.1, FeO/MnO = 96; rim Fa24.7, FeO/MnO = 104).

 

Classification: Lunar (feldspathic regolith melt breccia)

 

Specimens: 9.5 g in the form of a polished endcut at UWB; remainder with Mr. C. Zlimen.

           

Randy Says…

I have not studied this one.

 

More Information

Meteoritical Bulletin Database

NWA 12422

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