Lunar Meteorite: Northwest Africa 11159

from The Meteoritical Bulletin, No. 106

Northwest Africa 11159 (NWA 11159)

(Northwestern Africa)
Purchased: 2016
Mass: 10.7 g (1 piece)

Lunar Meteorite (feldspathic breccia)

History: The meteorite was bought in 2016 from a meteorite dealer in Morocco.

Physical characteristics: Small dark-gray to black individual without fusion crust.

Petrography: (A. Greshake, MNB) The meteorite is a fragmental breccia composed of lithic and mineral clasts cemented by a vesicular vitreous groundmass. Lithic clasts include gabbroic, basaltic and melt clasts; mineral clasts are dominantly anorthite, ferroan olivine, pigeonite, Ca-pyroxene and low-Ca pyroxene. Minor phases include ilmenite, fayalite, and FeS.

Geochemistry: olivine: Fa_38.4±9.4 (Fa_32.3-59.4, n=20, FeO/MnO=107±15); low-Ca pyroxene: Fs_50.3±12.3Wo_3.4±0.7 (Fs_30.3-60.9Wo_2.3-4.7, n=10, FeO/MnO=35±9); pigeonite: Fs_31.2±9.7Wo_11.7±4.1 (Fs_20.9-58.3Wo_5.8-19.5, n=22, FeO/MnO=58±5); Ca pyroxene: Fs_7.9±1.6Wo_31.5±2.8 (Fs_15.6-21.4Wo_25.5-35.4, n=10, FeO/MnO=45±4); calcic plagioclase: An_97.3±0.5 (An_96.4-98.1, n=13)

Specimens: 2.2 g MNB.

Randy Says…

I have not studied 11159.

More Information

Meteoritical Bulletin Database

NWA 11159