P-V and T-V Equations of State of natural biotite: An in-situ high-pressure and high-temperature powder diffraction study, combined with Mössbauer spectroscopy. (Articolo in rivista)

Type
Label
  • P-V and T-V Equations of State of natural biotite: An in-situ high-pressure and high-temperature powder diffraction study, combined with Mössbauer spectroscopy. (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.2138/am.2007.2359 (literal)
Alternative label
  • Pavese A.; Curetti N.; Diella V.; Levy D.; Dapiaggi M.; Russo U. (2007)
    P-V and T-V Equations of State of natural biotite: An in-situ high-pressure and high-temperature powder diffraction study, combined with Mössbauer spectroscopy.
    in The American mineralogist
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pavese A.; Curetti N.; Diella V.; Levy D.; Dapiaggi M.; Russo U. (literal)
Pagina inizio
  • 1158 (literal)
Pagina fine
  • 1164 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 92 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Pavese A. And Dapiaggi M. - Dipartimento Scienze della terra, università degli studi di Milano; Curetti N. and Levy D. - Dipartimento di Scienze Mineralogiche e Petrologiche, Università degli Studi di Torino; Diella V.- CNR Istituto per la dinamica dei processi ambientali; Russo U.-Dipartimento di Scienze Chimiche, Università di Padova (literal)
Titolo
  • P-V and T-V Equations of State of natural biotite: An in-situ high-pressure and high-temperature powder diffraction study, combined with Mössbauer spectroscopy. (literal)
Abstract
  • The P-V and T-V equations of state of a natural biotite sample (Mg/Fe ratio ? 1) have been studied using in-situ high-pressure (0.0001-11 GPa) synchrotron radiation powder diffraction at the European Synchrotron Radiation Facilities (ESRF) in Grenoble, France, and in-situ high-temperature (298-610 K) laboratory X-ray powder diffraction. A third-order Birch-Murnaghan model [V0 = 498.7(1) Å3, measured value] provides the following elastic parameters: K0 = 49(1) GPa, K' = 8.1(5). The volume thermal expansion is satisfactorily described by a constant value resulting in 37(2) 10-6 K-1. Mössbauer spectroscopy proves that REDOX reactions have occurred upon heating, presumably 2(OH- + Fe2+) -> 2O2- + 2Fe3+ + H2? and/or 4Fe2+ + 2OH- + O2 -> 4Fe3+ + 3O2 + H2O. On the basis of the elastic and thermal parameters measured we have modeled the deformation contribution (Gdeform) to the Gibbs energy. The third-order Birch-Murnaghan model with V0 fixed at its experimental value and the model with refined V0 do not significantly differ from one another in terms of Gdeform. A comparison based on Gdeform between biotite and phlogopite shows a better compliance to P of the former, though balanced in mineral reactions by a difference of molar volume, i.e., V0(biotite) > V0(phlogopite). (literal)
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