Lunar Meteorite: Northwest Africa 13715

Northwest Africa 13715 (NWA 13715)

northwestern Africa
Find: 2020
October Mass: 176.6 g (16 pieces)

Classification: Lunar meteorite (feldspathic breccia)

Physical characteristics: Sixteen black stones with mass ranging from 0.77g to 40.81g

Petrography: (J. Gattacceca, CEREGE) Subrounded mineral clasts to 600 µm and rare lithic clasts (with granulitic texture) set in a feldspathic mesostasis (evolving to a melt rock matrix in some areas) with vesicles to 10 µm. Main components are pyroxene and olivine, and feldspathic glass. Other minerals: metal, troilite.

Geochemistry: Olivine Fa_31.0 and Fa _40.3, FeO/MnO = 105.5 n(=2). Pyroxene Fs_19.9Wo_4.0, Fs_15.6Wo_25.0, Fs_13.1Wo_37.4, FeO/MnO = 64.2 (n=3). Chromite Cr# = 0.67 (n=1). Feldspathic fraction An_95.4±0.3Ab_4.2±0.4Or_0.4±0.2 (n=3).

Classification: Achondrite (lunar feldspathic breccia)

Randy Says…

I have not studied NWA 13715. It may be another stone of the NWA 8046 clan.

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