Lunar Meteorite: Northwest Africa 13036

A 7.5-g stone (top) and a 3.6-g stone (bottom) of Northwest Africa 13036. Photo credits: Sahararock
Two sides of a 4.1-g slice of NWA 13036: Photo credits: svassiliev

from The Meteoritical Bulletin, No. 109

Northwest Africa 13036 (NWA 13036)

Morocco
Purchased: 2019 October
Mass: 1780 g (many pieces)

Classification: Lunar (feldspathic melt breccia)

History: A group of stones found together near Tichiya, southern Morocco, was purchased jointly by Adam Aaronson and Ahmad Bouragaa.

Physical characteristics: The stones (total weight 1780 g) lack fusion crust but have a dark external weathering patina. Interiors are light gray and very fine grained with visible tiny rounded vesicles.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fine grained specimen dominated by microvesicular, melt-textured crystalline material surrounding sparse small feldspathic lithic clasts. Minerals are anorthite, olivine, orthopyroxene, subcalcic augite, chromite, troilite and secondary barite.

Geochemistry: Olivine (Fa28.6-36.8, FeO/MnO = 73-93, N = 7), orthopyroxene (Fs17.4Wo3.4, FeO/MnO = 58), subcalcic augite (Fs23.0Wo20.3, FeO/MnO = 42), anorthite (An95.9-97.5Or0.1, N = 3).

Classification: Lunar (feldspathic melt breccia).

Specimens: 21 g including one polished mount at UWB; remainder with A. Bouragaa and Aaronson.

Randy Says…

I have not studied 13036.

More Information

Meteoritical Bulletin Database

NWA 13036

Lunar Meteorites
List – ABC123 Order
List – Al2O3 Order