Tirhert Meteorite Eucrite Autunno 2014 Marocco - 0.72 g
N. 17207675
NWA 10495, Lunar - feldspathic breccia - 26 x 22 x 25mm - 16.9gr
N. 17207675
NWA 10495, Lunar - feldspathic breccia - 26 x 22 x 25mm - 16.9gr
Northwest Africa 10495 (NWA 10495)
Morocco
Find: 2015
Classification: Lunar meteorite (feldspathic breccia)
History: A group of similar stones were found together at an undisclosed location in southern Morocco during 2015.
Physical characteristics: Several grayish brown stones (total weight 15.6 kg) lacking fusion crust, but with a polished external appearance. All exhibit the same overall fine grained texture, with some visible larger whitish clasts within a dark gray matrix.
Petrography: (A. Irving and S. Kuehner, UWS) Relatively fine grained fragmental breccia composed of mineral clasts of anorthite, pigeonite, olivine, augite, Ti-chromite and troilite set in a matrix containing minor secondary barite.
Geochemistry: Olivine (Fa34.8-42.3, FeO/MnO = 86-95, N = 4), pigeonite (Fs29.8-32.4Wo8.8-12.9, FeO/MnO = 47-52, N = 3), augite (Fs20.6Wo35.4, FeO/MnO = 49), plagioclase (An96.4-97.1Or0.1, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances: (in wt.%) FeO 7.0, Na2O 0.30; (in ppm) Sc 17.0, La 1.9, Sm 1.0, Eu 0.67, Yb 1.0, Lu 0.15, Hf 0.6, Th 0.15.
Classification: Lunar (feldspathic breccia).
Specimens: 24.3 g including one stone polished on one side at UWB; the remaining material is held by the anonymous finders.
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