The Meteoritical Bulletin, No.
Northwest Africa 11159
Meteorite (feldspathic breccia)
meteorite was bought in 2016 from a meteorite dealer in Morocco.
characteristics: Small dark-gray to black
individual without fusion crust.
(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.
Fa38.4±9.4 (Fa32.3-59.4, n=20, FeO/MnO=107±15);
low-Ca pyroxene: Fs50.3±12.3Wo3.4±0.7 (Fs30.3-60.9Wo2.3-4.7,
n=10, FeO/MnO=35±9); pigeonite: Fs31.2±9.7Wo11.7±4.1
(Fs20.9-58.3Wo5.8-19.5, n=22, FeO/MnO=58±5); Ca
pyroxene: Fs7.9±1.6Wo31.5±2.8 (Fs15.6-21.4Wo25.5-35.4,
n=10, FeO/MnO=45±4); calcic plagioclase: An97.3±0.5 (An96.4-98.1,
2.2 g MNB