NWA 8277 (Lunar Breccia)

NWA8277lotA single 773g stone was purchased out of Morocco in 2013 by Adam Aaronson and classified by Prof. Carl Agee with University of New Mexico. Since the initial find, many more stones were located by nomads within the desert strewnfield. These new finds are technically “PROBABLY-PAIRED (p.p)” based on the find location. These stones HAVE been sent to UNM where they were analyzed (but not classified) as Lunar Breccia.  The analysis gives credence to the probably-paired designation. Slices were prepared by Montana Meteorite Laboratory feature a mirror finished front side and a rough back side (all slices have MIRROR finish front, ignore my bad photography). THESE SLICES LOOK BETTER IN PERSION…TRUST ME!!! Each slices comes in a quality labeled meteorite display box.

Petrography as follows:
Microprobe examination of polished mount shows a fragmental breccia of plagioclase, pyroxene, and olivine grains in a wide range of grain sizes. The groundmass is variable with some domains showing a uniform fine-grained subophitic plagioclase-pyroxene texture, while other domains show densely packed mineral clasts ranging from 10-300 μm. There are several sharp boundaries between the various textural domains, with at least two compositionally distinct olivine populations, and a wide range of pyroxene compositions, indicating multiple lithologies of a mingled fragmental breccia. Accessory ilmenite, silica polymorph, and troilite.  Fayalitic olivine grain Fa92.0, Fe/Mn=92; forsteritic olivine Fa41.1±11.8, Fe/Mn=103±8, n=9; pyroxene Fs40.5±12.9Wo22.4±9.4, Fe/Mn=65±9, n=63; plagioclase An90.9±7.2Ab8.6±6.8Or0.5±0.5, n=30. See the Meteoritical Bulletin entry here.

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