Lunar Meteorite: Northwest Africa 12422

from The Meteoritical Bulletin, No. 108

Northwest Africa 12422 (NWA 12422)

northwestern Africa
Find: 2018 October
Mass: 42.8 g (2 pieces)

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 (An_96.7-97.4Or_0.1, N = 2), orthopyroxene (Fs_24.6-26.6Wo_3.9-4.1, FeO/MnO = 54-58, N = 2), pigeonite (Fs_36.6Wo_9.7, FeO/MnO = 71), augite (Fs_15.3Wo_40.1, FeO/MnO = 38), olivine (core Fa_15.1, FeO/MnO = 96; rim Fa_24.7, 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 Northwest Africa 12422.

More Information

Meteoritical Bulletin Database

NWA 12422