Abstract
The Mössbauer spectra of four rhodonite samples have been obtained at 298 and 77 K. All the iron is in the ferrous state and is distributed among the five cation sites in rhodonite. Most of the iron is in the octahedral coordinated M1, M2, and M3 sites, but as these sites could not be individually distinguished in the spectra, the relative site populations were not obtained. The Fe2+ ions show a small preference for the near five-coordinate M4 site, and little iron enters the seven-coordinate M5 site.
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