Lunar Meteorite: Northwest Africa 15433

from The Meteoritical Bulletin, No. 111

Northwest Africa 15433 (NWA 15433)

(Northwestern Africa)
Purchased: 2022 June
Mass: 636 g (1 piece)

Lunar meteorite (feldspathic breccia)

Petrography: (K. Metzler, IfP) Achondritic breccia, consisting of mineral fragments (mainly pyroxene, olivine, and plagioclase) and subrounded lithic clasts up to ~1 cm (microgabbros and impact melt rock units), set in a compacted fine-grained matrix of related material. Impact melt spherules occur. Accessories are ilmenite, troilite, and Ni-bearing metal.

Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa_45.9±4.2 (Fa_41.0-56.5); mean Fe/Mn (at.): 106; n=12. Mean pyroxene composition: Fs_33.2±8.5 Wo_19.1±11.9 (Fs_13.6-46.1Wo_6.5-38.5); mean Fe/Mn (at.): 73; n=14. Mean plagioclase composition: An_96.2±0.9 Or_0.0±0.1 (An_94.9-97.5Or_0.0-0.1); n=11.

Classification: Lunar feldspathic breccia.

Specimens: 20 g at Institut für Planetologie, Münster; main mass with Space Rocks Eger, Bochum, Germany

Randy Says…

I have not studied Northwest Africa 15433.

More Information

Meteoritical Bulletin Database

NWA 15433