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from The
Meteoritical Bulletin, No. 108
Northwest Africa 12393
northwestern Africa
Purchased:
2016
Mass:
1267.1 g
Lunar
Meteorite (olivine gabbronorite breccia)
History: Purchased from Ahmad Buraga in
Morocco, February 22, 2016.
Physical characteristics: Single
stone, lacking fusion crust. Saw cut reveals a breccia of dark-brown and
dark-green clasts with a few, scattered, light-colored, feldspathic
fragments.
Petrography: (C. Agee, UNM) This meteorite is a chemically
equilibrated, fragmental breccia with olivine, augite, low-Ca pyroxene,
anorthitic plagioclase, and ubiquitous minor chromite. Following lunar
petrologic nomenclature this is an olivine gabbronorite.
Geochemistry: (C. Agee, UNM) Olivine Fa 27.2±2.9,
n=12; augite Fs14.0±1.4Wo39.8±1.8, Fe/Mn=50±7, n=4;
low-Ca pyroxene Fs22.5±1.9Wo5.9±2.1, Fe/Mn=52±3, n=8;
plagioclase An96.3±0.9Ab3.5±0.9Or0.2±0.0,
n=7.
Classification: Lunar
(olivine gabbronorite)
Specimens: 20.4 g including
a probe mount on deposit at UNM, Jay Piatek holds
the main mass.
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