Science Advances

Supplementary Materials

This PDF file includes:

  • fig. S1. Scanning electron microscopy image of aggregates of isometric zhemchuzhnikovite crystals from Chai-Tumus coal deposit, Sakha-Yakutia, Russia (sample from E. I. Nefedov’s collections).
  • fig. S2. Morphologies for stepanovite, reported by Knipovich et al. (8).
  • fig. S3. Morphologies for zhemchuzhnikovite.
  • fig. S4. TGA of bulk synthetic stepanovite.
  • fig. S5. TGA of bulk synthetic zhemchuzhnikovite.
  • fig. S6. Comparison of PXRD patterns for synthetic stepanovite after one, two, and three cycles of dehydration at 90°C and rehydration at 100% RH.
  • fig. S7. Thermal analysis of zhemchuzhnikovite after thermal dehydration at 90°C for 16 hours: TGA (top) and DSC (bottom).
  • fig. S8. Thermal analysis of zhemchuzhnikovite after thermal dehydration at 90°C, followed by exposure to 100% RH: TGA (top) and DSC (bottom).
  • fig. S9. Thermal analysis of stepanovite after thermal dehydration at 90°C: TGA (top) and DSC (bottom).
  • fig. S10. Thermal analysis of stepanovite after thermal dehydration at 90°C, followed by exposure to 100% RH: TGA (top) and DSC (bottom).
  • fig. S11. Overlay of FTIR-ATR spectra for mechanochemically prepared zhemchuzhnikovite analogs with different Al:Fe ratios.
  • table S1. PXRD data of bulk stepanovite from Chai-Tumus coal deposit, Siberia, Russia, were indexed on the basis of herein determined crystal structure.
  • table S2. PXRD data of bulk zhemchuzhnikovite from Chai-Tumus coal deposit, Siberia, Russia, were indexed on the basis of herein determined crystal structure.
  • Legends for data file S1 and S2

Download PDF

Other Supplementary Material for this manuscript includes the following:

  • data file S1 (.cif format). Crystallographic data for crystal structures of natural and synthetic samples of stepanovite and zhemchuzhnikovite.
  • data file S2 (.pdf format). checkCIF for crystal structures of natural and synthetic samples of stepanovite and zhemchuzhnikovite.

Files in this Data Supplement: