Lunar Meteorite

Northwest Africa 12643

northwestern Africa



from The Meteoritical Bulletin, No. 108

Northwest Africa 12643 (NWA 12643)

(Northwestern Africa)
Purchased: 2019 February
Mass: 2602 g

Lunar meteorite (feldspathic breccia)

History: Purchased in February 2019 by Darryl Pitt from a Mauritanian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of angular mineral grains of predominantly anorthite together with olivine, low-Ca pyroxene, augite, Ti-chromite and minor secondary barite.

Geochemistry: Plagioclase (An96.4-96.6Or0.1, N = 2), olivine (Fa25.4-25.8, FeO/MnO = 92-93, N = 2), low-Ca pyroxene (Fs20.6-20.9Wo4.3-3.5, FeO/MnO = 51-52, N = 2), augite (Fs10.5-10.6Wo42.3-41.6, FeO/MnO = 33-35, N = 2).

Classification: Lunar (feldspathic breccia).

Specimens: 20.4 g including a polished endcut and a polished epoxy mount at UWB; remainder with DPitt.


Randy Says…

I have not analyzed this one one.


More Information

Meteoritical Bulletin Database

NWA 12643




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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.



Last revised: 4 June 2019