Northwest Africa 10665 (NWA 10665)
Classification: Lunar meteorite (feldspathic breccia)
History: Purchased by Fabien Kuntz in March 2016 from a dealer in Zagora, Morocco.
Physical characteristics: A single dark stone (24.73 g) lacking fusion crust. The fresh interior contains ~30 vol% of white and beige clasts in a fine-grained black matrix.
Petrography: (A. Irving and S. Kuehner, UWS) Relatively fine-grained breccia composed of mineral fragments (anorthite, pigeonite, exsolved pigeonite, olivine, augite, chromite, ilmenite, troilite, kamacite) plus some glass fragments in a finer grained matrix.
Geochemistry: Olivine (Fa7.3; Fa26.7; Fa38.2; FeO/MnO = 74-87, N = 3), orthopyroxene host in exsolved pigeonite (Fs34.3Wo3.2, FeO/MnO = 48), pigeonite (Fs33.0Wo7.2, FeO/MnO = 49), augite (Fs16.3Wo35.1-37.8; Fs11.0Wo42.3; FeO/MnO = 36-42, N = 3), plagioclase (An96.7-97.3Or0.1, N = 2).
Classification: Lunar (feldspathic breccia).
Specimens: 5.01 g in the form of one polished endcut at PSF; remainder with Kuntz.
Northwest Africa 10665 is a typical feldspathic lunar meteorite, one compositionally most similar to NWA 7959.
Meteoritical Bulletin Database
Korotev R. L. and Irving A. J. (2017) Still not keeping up with the lunar meteorites – 2017. Lunar and Planetary Science XLVIII, abstract no. 1498.
Korotev R. L. and Irving A. J. (2021) Lunar meteorites from northern Africa. Meteoritics & Planetary Science, 206–240.