Lunar Meteorite: Northwest Africa 13346

northwestern Africa

from The Meteoritical Bulletin, No. 109

Northwest Africa 13346 (NWA 13346)

(Northwest Africa)
Purchased: 2020 May
Mass: 48.7 g (1 piece)

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased in May 2020 by Craig Zlimen from Mark Lyon, who in turn had bought the stone from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL)  Breccia composed of mineral clasts of anorthite, olivine, orthopyroxene, pigeonite and subcalcic augite, plus some basalt and gabbroic anorthositic lithic clasts and glass spherules, set in a finer grained matrix containing kamacite, taenite, fayalite, troilite and ilmenite. One feldspathic clast contains accessory Cr-pleonaste rimmed by Ti-chromite.

Geochemistry: Olivine (Fa22.2-45.3, FeO/MnO = 86-104, N = 5), low-Ca pyroxene (Fs29.2Wo3.9, FeO/MnO = 66), pigeonite (Fs32.6-60.8Wo17.2-23.0, FeO/MnO = 53-77, N = 4), subcalcic augite (Fs55.3Wo33.0, FeO/MnO = 65), anorthite (An95.5-96.3Or0.5-0.6, N = 2), fayalite (Fa92.3, FeO/MnO = 76), kamacite (Ni = 5.5 wt.%), taenite (Ni = 13.6 wt.%).

Classification: Lunar (feldspathic regolith breccia).

Specimens: 10.0 g in the form of a polished endcut at UWB; remainder with Mr. C. Zlimen.

Randy Says…

I have not studied 13346.

More Information

Meteoritical Bulletin Database

NWA 13346

Lunar Meteorites | List of Lunar meteorites