Sánchez del Río, Manuel and Súarez Barrios, Mercedes and García Romero, Emilia and Alianelli, Lucia and Felici, Roberto and Martinetto, Pauline and Dooryhée, Eric and Reyes Valerio, Constantino and Borgatti, Francesco and Doyle, Bryan and Giglia, Angelo and Mahne, Nicola and Pedio, Maddalena and Nannarone, Stefano (2005) Mg K-edge XANES of sepiolite and palygorskite. Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms , 238 . pp. 55-60. ISSN 0168-583X
Official URL: http://www.elsevier.com/locate/nimb
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.
|Uncontrolled Keywords:||Sepiolite; Palygorskite; Fibrous clay; X-ray absorption spectroscopy|
|Subjects:||Sciences > Geology > Mineralogy|
|Deposited On:||14 Oct 2011 12:16|
|Last Modified:||14 Oct 2011 12:16|
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