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Profil de Marc Blanchard

Blanchard Marc

Email :

Téléphone / phone: +33 (0)5 61 33 25 79

Bureau / office : F159

Institution : CNRS

Statut / status: Chercheur

Adresse professionnelle / address:

Laboratoire Géosciences Environnement Toulouse (GET)
Observatoire Midi-Pyrénées (OMP)
Université Toulouse III
14 avenue Edouard Belin,
31400 Toulouse, FRANCE

Site perso / personal website :

Research Experiences


CNRS researcher, Directeur de recherche

GET, Université Paul Sabatier, Toulouse, France


CNRS researcher, Chargé de recherche

GET, Université Paul Sabatier, Toulouse, France


CNRS researcher, Chargé de recherche

IMPMC, Université Pierre et Marie Curie, Paris, France


Post-doc (ANR project SPIRSE): "Ab initio modelling of iron-bearing minerals: isotopic fractionation and surface reactions" (PI: Pr E. Balan)

IMPMC, Université Pierre et Marie Curie, Paris, France


Post-doc (NERC project e-Minerals): "Ab initio modelling of arsenic interaction with iron sulphides" (PI: Pr C.R.A. Catlow and Pr K. Wright)

DFRL, University College London


Post-doc (RTN EU network HYDROSPEC): "Atomistic modelling of hydrogen defects in ringwoodite" (PI: Pr K. Wright)

DFRL, University College London



Habilitation à Diriger des Recherches "Contribution of molecular modelling in the crystal-chemical and isotopic study of minerals"

Defense: 09/07/2015, Université Pierre et Marie Curie (France)


PhD in experimental mineralogy (supervisor: Dr. J. Ingrin) "Hydrogen diffusion in garnets (pyropes)"

Defense: 23/09/2003, Université Toulouse III (France)


  • French Society of Mineralogy and Crystallography (SFMC)
  • European Association of Geochemistry

My research activity focuses on the understanding and modeling of the molecular scale mechanisms involving minerals, in some fundamental steps of the geochemical cycle of elements in depth or at the surface of the Earth. My work relies essentially on the calculation of the vibrational properties for the information that these techniques provide, and because the vibrational properties also give access to thermodynamic properties such as isotopic fractionation. I develop this research in the group « Géochimie des isotopes stables » (ET8).

  • Isotopic fractionation modeling (Fe, Zn, Mg isotopes and others)
  • Crystal-chemistry of low-temperature minerals (oxides, sulfides, carbonates, apatites, As-bearing minerals)
  • Crystal-chemistry of volatiles (H, F, Xe) in nominally anhydrous mantle minerals

Research Grants & Projects

PI of the DARI i2016041519 project (Annual application for computing resources on national facilities, GENCI) "Ab initio calculation of vibrational and surface properties of crystals: Geophysical and geochemical implications". Between 30 000 et 200 000 CPU hours obtained every year between 2008 and 2017.

PI of the ANR project (French national research agency) JCJC 11-JS56-001 "CrIMin": Crystal-chemistry of iron-bearing minerals and implications in the geochemical cycling of metal pollutants. 2011-2014.

PI of the ECOS Nord project (Scientific cooperation with Colombia) "Computational modelong of Fe-S phase diagram, alloys stability and Fe equilibrium isotope fractionation at condition of planetary interiors". 2017-2019

PI of the national INSU EC2CO project "Zn-Incorp: Zn incorporation in kaolinite and goethite, and its isotopic consequences". 2017-2018

Member of the national INSU PNP project "H-olivine project: coupled experimental and numerical approaches". PI: J. Ingrin (UMET, Univ. Lille I), 2015-2016.


  • 2012- : General Secretary of the French Society of Mineralogy and Crystallography (SFMC)
  • 2017-2018: Elected member of the scientific committee of the Observatory Midi-Pyrénées
  • 2014-2016: Elected member of laboratory managing council (IMPMC-Univ Paris 06)


  • EMU Research Excellence Medal 2017

Main/Recent publications


  • Balan E., Noireaux J., Mavromatis V., Saldi G., Montouillout V., Blanchard M., Pietrucci F., Gervais C., Rustad J.R., Schott J., Gaillardet J. (2018) Theoretical isotopic fractionation between structural boron in carbonates and aqueous boric acid and borate ion. Geochimica et Cosmochimica Acta.  222, 117-129
  • Crépisson C., Blanchard M., Lazzeri M., Balan E., Sanloup C. (2018) New constraints on Xe incorporation mechanisms in olivine from First-principles calculations. Geochimica et Cosmochimica Acta. 222, 146-155
  • Ducher M., Blanchard M., Balan E. (2018) Equilibrium isotopic fractionation between aqueous Zn and minerals from first-principles calculations. Chemical Geology, 483, 342-350
  • Blanchard M., Méheut M., Delon L., Poirier M., Micoud P., Le Roux C., Martin F. (2018) Infrared spectroscopic study of the synthetic Mg-Ni talc series. Physics and Chemistry of Minerals, 45, 843-854
  • Crépisson C., Sanloup C., Cormier L., Blanchard M., Hudspeth J., Rosa A.D., Mathon O., Irifune T. (2018) Kr environment in feldspathic glass and melt: a high pressure, high temperature X-ray absorption study. Chemical Geology, 493, 525-531


  • Blanchard M., Balan E., Schauble E.A. (2017) Equilibrium fractionation of non-traditional isotopes: A molecular modeling perspective. Reviews in Mineralogy and Geochemistry "Non-traditional stable isotopes", 82, 27-63
  • Le Pape P., Blanchard M., Brest J., Boulliard J-C., Ikogou M., Stetten L., Wang S., Landrot G., Morin G. (2017) Arsenic incorporation in pyrite at ambient temperature at both tetrahedral S-I and octahedral Fe+II sites: evidence from EXAFS-DFT analysis. Environmental Science & Technology. 51, 150-158
  • Balan E., Blanchard M., Lazzeri M., Ingrin J. (2017) Theoretical Raman spectrum and anharmonicity of tetrahedral OH defects in hydrous forsterite. European Journal of Mineralogy, 29, 202-212
  • Blanchard M., Ingrin J., Balan E., Kovács I., Withers A.C. (2017) Effect of iron and trivalent cations on OH-defects in olivine. American Mineralogist, 102, 302-311
  • Balan E., Aufort J., Pouillé S., Dabos M., Blanchard M., Lazzeri M., Rollion-Bard C., Blamart D. (2016) Infrared spectroscopic study of sulfate-bearing calcite from deep-sea bamboo coral. European Journal of Mineralogy, 29, 397-408
  • Jiménez-Ruiz M., Ferrage E., Blanchard M., Fernandez-Castanon J., Delville A., Johnson M., Michot L. (2017) Combination of inelastic neutron scattering experiments and ab-initio quantum calculations for the study of the hydration properties of oriented saponites. The Journal of Physical Chemistry C. 121(9), 5029-5040.
  • Ducher M., Pietrucci F., Balan E., Ferlat G., Paulatto L., Blanchard M. (2017) Van der Waals contribution to the relative stability of aqueous Zn(2+) coordination states. Journal of Chemical Theory and Computation. 13(7), 3340-3347.
  • Aufort J., Ségalen L., Gervais C., Paulatto L., Blanchard M., Balan E. (2017) Site-specific equilibrium isotopic fractionation of oxygen, carbon and calcium in apatite. Geochimica et Cosmochimica Acta. 219, 57-73


  • Ducher M., Blanchard M., Vantelon D., Nemausat R., Cabaret D. (2016) Probing the local environment of substitutional Al3+ in goethite using X-ray absorption spectroscopy and first-principles calculations. Physics and Chemistry of Minerals, 43, 217-227
  • Balan E., Pietrucci F., Gervais C., Blanchard M., Schott J., Gaillardet J. (2016) First-principles study of boron speciation in calcite and aragonite. Geochimica Cosmochimica Acta. 193, 119-131
  • Ducher M., Blanchard M., Balan E. (2016) Equilibrium zinc isotope fractionation in Zn-bearing minerals from first-principles calculations. Chemical Geology. 443, 87-93


  • Blanchard M., Dauphas N., Hu M.Y., Roskosz M., Alp E.E., Golden D.C., Sio C.K., Tissot F.L.H., Zhao J., Gao L., Morris R.V., Fornace M., Floris A., Lazzeri M. & Balan E. (2015) Reduced partition function ratios of iron and oxygen in goethite. Geochimica Cosmochimica Acta, 151, 19-33
  • Pinilla C., Blanchard M., Balan E., Natarajan S. K., Vuilleumier R., Mauri F. (2015) Equilibrium magnesium isotope fractionation between aqueous Mg2+ and carbonate minerals: Insights from path integral molecular dynamics. Geochimica Cosmochimica Acta, 163, 126-139
  • Boulard E., Goncharov A., Blanchard M. & Mao W. (2015) Pressure-induced phase transition in MnCO3 and its implications on the deep carbon cycle. Journal of Geophysical Research: Solid Earth. 120, 4069-4079
  • Laporte S., Finocchi F., Paulatto L., Blanchard M., Balan E., Guyot F. & Saitta A. M. (2015) Strong electric fields at a prototypical oxide/water interface probed by ab initio molecular dynamics: MgO(001). Physical Chemistry Chemical Physics, 17, 20382-20390
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