|from The Meteoritical Bulletin, No. 109
Northwest Africa 13216 (NWA 13216)
Classification: Lunar Meteorite (feldspathic breccia)
History: Purchased from Morocco October 2019.
Physical characteristics: Eighteen identical appearing pieces. No fusion crust, desert weathered exteriors.
Petrography: (C. Agee, UNM) EPMA images show fragmental breccia of differing grain-size scales. The groundmass is extremely fine-grained with multiple lithologies and single-phase fragments of olivine, pyroxene, and plagioclase. Chromite, spinel, silica, and shock melt were observed.
Geochemistry: (C. Agee, UNM) Olivine Fa31.5±8.8, Fe/Mn=95±12, n=12; pigeonite Fs36.0±13.7Wo11.9±9.6, Fe/Mn=63±13, n=12; plagioclase An96.2±1.2, n=6; shock melt (proxy for bulk composition) SiO2=43.6, TiO2=0.38, Al2O3=28.5, MgO=6.4, FeO=4.6, MnO=0.07, CaO=15.6, Na2O=0.09 (wt%).
Classification: Lunar, feldspathic breccia
Specimens: 20.4 g on deposit at UNM, Larry Atkins holds the main mass.
I have not studied 13216. It may be an NWA 8046 pair.
Meteoritical Bulletin Database