Description
Northwest Africa 11809 (NWA 11809)
(Northwest Africa)
Purchased: 2017 Sep
Classification: Lunar meteorite (feldspathic breccia)
History: Purchased by Fabien Kuntz in September 2017 from a dealer in Erfoud, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral clasts of anorthite, olivine, orthopyroxene, pigeonite, subcalcic augite and Ti-chromite in a finer grained matrix containing minor barite.
Geochemistry: Olivine (Fa30.0-41.3, FeO/MnO = 87-97, N = 3), orthopyroxene (Fs35.7Wo4.2, FeO/MnO = 56), pigeonite (Fs25.2-29.8Wo7.9-10.1, FeO/MnO = 52-63, N = 2), subcalcic augite (Fs15.8Wo30.1, FeO/MnO = 56), anorthite (An92.0-95.0Or0.2-0.1, N = 2).
Classification: Lunar (feldspathic breccia).
Specimens: 14.11 g including a polished slice at UWB; main mass with Kuntz.
