Synchrotron X-ray diffraction study of the structure and dehydration behavior of todorokite

@article{Post2003SynchrotronXD,
  title={Synchrotron X-ray diffraction study of the structure and dehydration behavior of todorokite},
  author={Jeffrey E. Post and Peter J. Heaney and Jonathan C. Hanson},
  journal={American Mineralogist},
  year={2003},
  volume={88},
  pages={142 - 150}
}
Real-time, temperature-resolved synchrotron powder X-ray diffraction data and Rietveld refinements were used to investigate the behavior of the todorokite structure from 100 to 820 K. At 298 K, the lower valence cations, such as Mn 3+ , occupy large octahedral sites at the edges of the triple chains, and four water/cation sites are in the tunnels. In our heating experiments in vacuum, todorokite began to break down at ~450 K and fully decomposed by 620 K, at which point hausmannite started to… CONTINUE READING

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