Mössbauer spectroscopic study on the composition of Fe-containing minerals in ordinary chondrites, Miller Range 07710 and Yamato 790272

W. Sato, M. Nakagawa, N. Shirai, M. Ebihara

Hyperfine Interactions
(2018) 239: 13. https://doi.org/10.1007/s10751-018-1489-z


“57Fe Mössbauer spectroscopy was applied to compositional studies of Fe-containing minerals in two different ordinary chondrites, MIL 07710 (L4) and Y-790272 (H4), collected in Antarctica. For both samples, spectral analysis revealed that there are five quadrupole doublets and two magnetic sextets in the room-temperature spectra, suggesting the presence of olivine (M1 and M2), pyroxene (M1 and M2), a high-spin Fe3+ containing phase, antiferromagnetic FeS (troilite), and ferromagnetic Fe-Ni alloy. The large relative area of the oxidized Fe3+ phases and the small intensity of the metal phases signify a possible effect of terrestrial weathering especially for Y-790272 (H4).”