Mg K-edge XANES of sepiolite and palygorskite

M. Sánchez Del Río, M. Suárez, E. García Romero, L. Alianelli, R. Felici, P. Martinetto, E. Dooryhée, C. Reyes-Valerio, F. Borgatti, B. Doyle, A. Giglia, N. Mahne, M. Pedio, S. Nannarone

Research output: Contribution to journalConference articlepeer-review

17 Citations (Scopus)


We present a study of the Mg K-edge on sepiolite and palygorskite performed at the INFM BEAR beamline at Elettra synchrotron light source (Trieste). These two clays, although having very similar structures, show some different features in their near-edge. Mg is in octahedral coordination with oxygens, hydroxyl groups or water, for both palygorskite and sepiolite. The differences found in the near-edge seem to reflect the fact that, on average, an Mg atom in palygorskite "sees" less Mg in higher coordination shells than sepiolite.

Original languageEnglish
Pages (from-to)55-60
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number1-4
Publication statusPublished - Aug 2005
Externally publishedYes
EventSynchrotron Radiation in Materials Science Proceedings of the 4th Conference on Synchrotron Radiation in Materials Science -
Duration: 23 Aug 200425 Aug 2004


  • Fibrous clay
  • Palygorskite
  • Sepiolite
  • X-ray absorption spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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