Original paper
Iron meteorites and their weathering products: high velocity resolution Mössbauer spectroscopy of the iron-bearing minerals
Goryunov, Mikhail V.; Yakovlev, Grigoriy A.; Chukin, Andrei V.; Grokhovsky, Victor I.; Semionkin, Vladimir A.; Oshtrakh, Michael I.
European Journal of Mineralogy Volume 28 Number 3 (2016), p. 601 - 610
published: Sep 23, 2016
Abstract
The iron meteorites Anyujskij IIAB, Sikhote-Alin IIAB, Sterlitamak IIIAB, Aliskerovo IIIE-an and Dronino iron-ung and products of Dronino meteorite weathering in clay sand were studied using Mössbauer spectroscopy with a high velocity resolution. Components revealed in the complex Mössbauer spectra were related to corresponding iron-bearing minerals. A difference in the oxidation products of two Dronino fragments was observed. The presence of siderite was found in the external surface oxidation layer in the second fragment, which may be a result of goethite bioreduction in clay sand.
Keywords
maghemite and goethite • α-fe(ni, co) • magnetite • γ-fe(ni, co) phases • α2-fe(ni, co) • iron meteorites • mössbauer spectroscopy • siderite • weathering