Lunar Meteorite: Northwest Africa 13138

from The Meteoritical Bulletin, No. 109

Northwest Africa 13138 (NWA 13138)

(Northwest Africa)
Purchased: 2019
Mass: 16.70 g (1 piece)

Classification: Lunar meteorite (feldspathic breccia)

Physical characteristics: Grey irregular fragments. Cut face show a dark-gray interior with mm-sized white angular clasts.

Petrography: (J. Gattacceca, CEREGE) Sparse mineral clasts (anorthite, olivine, pyroxene, to 300 μm) in a feldspathic melt rock matrix. Melt rock has numerous vesicles with typical sizes 30 µm. Chromite, troilite and rare metal are present.

Geochemistry: Anorthite An_97.1Ab_3.0Or_0.0 (n=2). Augite Fs_21.1±14.8Wo_36.5±8,7, FeO/MnO=53 (n=3). Olivine Fa_26.9±4.2, FeO/MnO=110 (n=2).

Classification: Lunar (feldspathic melt breccia).

Specimens: Type specimen at CEREGE. Main mass with Jérémy Bassemon.

Randy Says…

I have not studied 13138. It may be another stone of the NWA 8046 clan.

More Information

Meteoritical Bulletin Database

NWA 13138