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Profil de Gleb Pokrovski

Pokrovski Gleb

Email : gleb.pokrovskiSPAMFILTER@get.obs-mip.fr

Téléphone / phone: 0561332618

Bureau / office : F023

Institution : CNRS

Statut / status: Chercheur

Adresse professionnelle / address:

Geosciences Environnement Toulouse (ex-LMTG)
GET - UMR 5563 of CNRS, University of Toulouse III
14 avenue Edouard Belin , F- 31400 TOULOUSE, France
e-mail: gleb.pokrovski@get.obs-mip.fr; glebounet@gmail.com
phone: 33-5-61-33-26-18 , fax: 33-5-61-33-25-60

Site perso / personal website :

Profile

Geochemist, Directeur de Recherche at CNRS (DR2, Senior Research Associate), GET-CNRS-University of Toulouse, France

 

 

Academic Degrees

2007               Habilitation à Diriger des Recherches (H.D.R.), University of Toulouse.

1996               Ph.D. in Geochemistry, University of Toulouse (with honors)

1991               Diploma in Geochemistry (equivalent of a Master's Degree), Moscow State University, Geological Department, Russia.

1990               Equivalent of a Bachelor's Degree, Moscow State University, Geological Department, Russia.

 

Awards

Houtermans medal for young scientist in 1999 discerned by the European Association of Geochemistry (EAG)

 

Positions

Oct 2010-present              Research Director (DR2), GET, CNRS, Toulouse

May 2003-Sep 2010          Research Associate (CR1), LMTG-GET, CNRS, Toulouse

Oct 2000-Avril 2003         Research Associate (CR1), ISTO, CNRS, Orléans

Oct 1997- Sept 2000         Research Associate (CR2), CRSCM-CNRS, Orléans

Jan 1997-Sept 1997          Postdoctoral fellow, Laboratoire de Géochimie, CNRS-OMP-UPS, Toulouse.

1993-1996                        Ph.D. student (Fellowship from Ministère de la Recherche et de la Technologie), Laboratory of Geochemistry, CNRS-University of Toulouse.

1991-1993                Research Fellow, Laboratory of Physical Geochemistry, Institute of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM), Moscow, Russia.

1984-1991                          Undergraduate student, Moscow State University, Geological Department.

 

Research expertise

# Experimental high- and low-temperature geochemistry, fluid-rock interactions, metal speciation and partitioning in mineral-melt-fluid-vapor systems

# Physical-chemical modeling of fluid-rock interactions and ore deposit formation; generation of the thermodynamic properties of aqueous species and minerals

# Laboratory and synchrotron-based spectroscopic methods (Raman, NMR, XAS, XRF) for studying fluids, minerals, and micro-organisms at low and high temperatures and pressures

# Geochemistry of hydrothermal-magmatic ore deposits

# Stable isotope geochemistry

 

Teaching

- ‘Speciation of metals in geological fluids’, Lectures and Tutorials, 8h/year, Master ‘Material and Ressources’, University of Orléans (1999-2001)

- ‘Métals, fluids and ore deposits’, Lectures, 8h/year, Professional Master ‘Mineral Ressources, and Master Terre Solide, University of Toulouse (2007-2014)

- ‘Geochemistry of crustal fluids’, Lectures, 4h, European Master Courses of University of Lyon (2008)

- ‘Fluid-rock interactions and ore deposits’, lectures and tutorials: 7h/year, European Master Course, University of Geneva; 24h/year Master ‘Ore Engineering’, Geological School (ENSG), Nancy, France (2010-2014).

 

Supervision of Students and postdocs

5 Ph.D. theses; 3 postdocs/researchers; 4 Master theses; 9 Bachelor theses

 

Team supervision, scientific animation, responsabilities

- Organization and chairing of scientific sections at international conferences: Goldschmidt Conference; European Union of Geosciences; Experimental Mineralogy, Petrology and Geochemistry

- Responsible of the mechanical lab of GET

- 1998-2014: I have elaborated and led 21 international and national research projects funded by CNRS, University, French Embassy, and National Research Agency (ANR)

- Associate Editor of Economic Geology and Geochimica et Cosmochimica Acta

- Leader of the team ‘Experimentation’ at GET (20 scientists, technicians, and post docs)

 

Publications

59 published papers in international reviews (48 as the first or second author); 70 abstracts at scientific conferences; 21 invited conferences; CI = 1762; h-index = 27 (Web of Science – 04/11/2015); CI = 2299; h-index = 29 (Google Scholar – 04/11/2015)

 

10 most significant publications over the 5 last years:

Pokrovski G.S., Kokh M.A., Guillaume D., Borisova A.Y., Gisquet P., Hazemann J.-L., Lahera E., Del Net W., Proux O., Testemale D., Haigis V., Jonchière R., Seitsonen, A.P., Ferlat G., Vuilleumier R., Saitta A.M., Boiron M.-C., Dubessy J. (2015) Sulfur radical species form gold deposits on Earth.Proceedings of National Academy of Science of the USA (PNAS),112(44), 13484-13489;www.pnas.org/cgi/doi/10.1073/pnas.1506378112.

Pokrovski G.S., Dubessy J. (2015) Stability and abundance of the trisulfur radical ion S3-in hydrothermal fluids.Earth and Planetary Science Letters411, 298-309.

 

Pokrovski G.S., Akinfiev N.N., Borisova A.Y., Zotov A.V., Kouzmanov K. (2014) Gold speciation and transport in geological fluids: insights from experiments and physical-chemical modeling. Book chapter in: Geological Society of London Special Publication “Gold-transporting fluids in the Earth’s crust” (eds. P. Garofalo, E. Ripley), 402, 9-70; http://sp.lyellcollection.org/.

Jacquemet N., Guillaume D., Zwick A., Pokrovski G.S. (2014) In-situ Raman spectroscopy identification of the S3-ion in S-rich hydrothermal fluids from synthetic fluid inclusions. American Mineralogist, 99, 1109-1118. http://ammin.geoscienceworld.org/cgi/content/full/99/5-6/1109?ijkey=qFzX4wjdpn.Mw&keytype=ref&siteid=gsammin

Pokrovski G.S., Borisova A.Y., Bychkov A.Y. (2013) Speciation and transport of metals and metalloids in geological vapors. Chapter in Reviews in Mineralogy & Geochemistry 76, 165-218.

Pokrovski G.S., Roux J. Ferlat G., Jonchiere R., Seitsonen A.P., Vuilleumier R., Hazemann J.-L. (2013) Silver in geological fluids from in situ X-ray absorption spectroscopy and first-principles molecular dynamics. Geochimica et Cosmochimica Acta 106, 501-523.

Kouzmanov K., Pokrovski G.S. (2012) Hydrothermal controls on metal distribution in Cu(-Au-Mo) porphyry systems. Book chapter in: Geology and Genesis of Geology and Genesis of Major Copper Deposits and Districts of the World: A Tribute to Richard H. Sillitoe (eds. J.W. Hedenquist, M. Harris, and F. Camus). Society of Economic Geologists Special Publication, 16, 573-618.

Borisova A.Y., Ceuleneer G., Kamenetsky V., Arai S., Béjina F., Abily B., Bindeman I., Polvé M., de Parseval P., Aigouy T., Pokrovski G.S. (2012) A new view on the petrogenesis of the Oman ophiolite chromitites from microanalyses of chromite-hosted inclusions. Journal of Petrology 53(12), 2411-2440.

Pokrovski G.S., Dubrovinsky L.S. (2011) The S3- ion is stable in geological fluids at elevated temperatures and pressures. Science 331, 1052-1054. 

Main/Recent publications

2015

Pokrovski G.S., Kokh M.A., Guillaume D., Borisova A.Y., Gisquet P., Hazemann J.-L., Lahera E., Del Net W., Proux O., Testemale D., Haigis V., Jonchière R., Seitsonen, A.P., Ferlat G., Vuilleumier R., Saitta A.M., Boiron M.-C., Dubessy J. (2015) Sulfur radical species form gold deposits on Earth.Proceedings of National Academy of Science of the USA (PNAS),112(44), 13484-13489;www.pnas.org/cgi/doi/10.1073/pnas.1506378112.

Pokrovski G.S.,Dubessy J. (2015) Stability and abundance of the trisulfur radical ion S3- in hydrothermal fluids.Earth and Planetary Science Letters411, 298-309.

AkiNFIEV N.N., PLYASUNOV A.V, Pokrovski G.S.(2015) An equation of state for predicting the thermodynamic properties and vapour-liquid partitioning of aqueous Ge(OH)4 in a wide range of water densities.Fluid Phase Equilibria392, 74-83.

Sanson A., Pokrovski G. S., Giarola M., Mariotto G. (2015) Vibrational dynamics of rutile-type GeO2 from micro-Raman spectroscopy experiments and first-principles calculations.Europhysics Letters109, 26007.

2014

Bazarkina E.F.,Pokrovski G.S.,Hazemann J.-L. (2014) Structure, stability and geochemical role of palladium chloride complexes in hydrothermal fluids.Geochimica et Cosmochimica Acta,146, 107-131.

Jacquemet N., Guillaume D., Zwick A., Pokrovski G.S. (2014) In-situ Raman spectroscopy identification of the S3- ion in S-rich hydrothermal fluids from synthetic fluid inclusions. American Mineralogist, 99, 1109-1118.

Pokrovski G.S., Akinfiev N.N., Borisova A.Y., Zotov A.V., Kouzmanov K. (2014) Gold speciation and transport in geological fluids: insights from experiments and physical-chemical modeling. Book chapter in: Geological Society of London Special Publication “Gold-transporting fluids in the Earth’s crust” (eds. P. Garofalo, E. Ripley), available on line at http://sp.lyellcollection.org/.

Pokrovski G.S. (2014) Use and misuse of chemical reactions and aqueous species distribution diagrams for interpreting metal transport and deposition in porphyry copper systems: Comment on Sun et al. (2013) “The link between reduced porphyry copper deposits and oxidized magmas”, Geochim. Cosmochim. Acta 103, 263–275. Geochimica et Cosmochimica Acta 126, 635-638.

Pokrovsky O.S., Galy A., Schott J., Pokrovski G.S., Mantoura S. (2014) Germanium isotope fractionation during Ge adsorption on goethite and its coprecipitation with Fe oxy(hydr)oxides. Geochimica et Cosmochimica Acta 131, 138-149.

Velásquez G., Béziat D., Salvi S., Siebenaller L., Borisova A.Y., Pokrovski G.S. de Parseval P. (2014) Formation and deformation of pyrite and implications for gold mineralization at the El Callao Mining District, Venezuela. Economic Geology, 109, 457-486.

 

2013

Pokrovski G.S., Borisova A.Y., Bychkov A.Y. (2013) Speciation and transport of metals and metalloids in geological vapors. Chapter in Reviews in Mineralogy & Geochemistry 76, 165-218.

Pokrovski G.S., Roux J. Ferlat G., Jonchiere R., Seitsonen A.P., Vuilleumier R., Hazemann J.-L. (2013) Silver in geological fluids from in situ X-ray absorption spectroscopy and first-principles molecular dynamics. Geochimica et Cosmochimica Acta 106, 501-523.

Tooth B., Etchmann B., Pokrovski G.S., Testemale D., Hazemann J.-L., Grundler P., Brugger J. (2013) Bismuth speciation in hydrothermal fluids: an X-ray absorption spectroscopy and solubility study. Geochimica et Cosmochimica Acta 101, 156–172.

 

2012

Kouzmanov K., Pokrovski G.S. (2012) Hydrothermal controls on metal distribution in Cu(-Au-Mo) porphyry systems. In: Geology and Genesis of Geology and Genesis of Major Copper Deposits and Districts of the World: A Tribute to Richard H. Sillitoe (eds. J.W. Hedenquist, M. Harris, and F. Camus). Society of Economic Geologists Special Publication, 16, 573-618.

Borisova A.Y., Ceuleneer G., Kamenetsky V., Arai S., Béjina F., Abily B., Bindeman I., Polvé M., de Parseval P., Aigouy T., Pokrovski G.S. (2012) A new view on the petrogenesis of the Oman ophiolite chromitites from microanalyses of chromite-hosted inclusions. Journal of Petrology 53(12), 2411-2440.

Tella M., Pokrovski G.S. (2012) Stability and structure of pentavalent antimony complexes with aqueous organic ligands. Chemical Geology 292-293, 57-68.

POKROVSKY O.S., POKROVSKI G.S., SHIROKOVA L.S., GONZALEZ A.G., EMNOVA E.E., FEURTET-MAZEL A. (2012) Chemical and structural status of copper associated with oxygenic and anoxygenic phototrophs and heterotrophs: possible evolutionary consequences. Geobiology 10, 130-149.

 

2011

Pokrovski G.S., Dubrovinsky L.S. (2011) The S3- ion is stable in geological fluids at elevated temperatures and pressures. Science 331, 1052-1054. doi: 10.1126/science.1199911.

Saunier G., Pokrovski G.S., Poitrasson F. (2011) First experimental determination of iron isotope fractionation between hematite and aqueous solution at hydrothermal conditions. Geochimica et Cosmochimica Acta 75, 6629–6654.

Testemale D., Pokrovski G.S., Hazemann J.-L. (2011) Speciation of AsIII and AsV in hydrothermal fluids by in-situ X-ray absorption spectroscopy. European Journal of Mineralogy 23, 379-390.

 

2010

Bazarkina E.F., Pokrovski G.S., Zotov A.V., Hazemann J-L. (2010) Structure and stability of cadmium chloride complexes in hydrothermal fluids. Chemical Geology 276 (1-2), 1-17. http://dx.doi.org/10.1016/j.chemgeo.2010.03.006

Borisova A.Y., Pokrovski G.S., Pichavant M., Freydier R., Candaudap F. (2010) Arsenic enrichment in hydrous peraluminous melts: insights from femtosecond laser ablation – inductively coupled plasma – quadrupole mass spectrometry, and in situ X-ray absorption fine structure spectroscopy. American Mineralogist 95, 1095-1104. doi: 10.2138/am.2010.3424

Pokrovski G.S. (2010) Enhanced vapor-phase transport of tin in hydrothermal systems or experimental artifacts? Journal of Volcanology and Geothermal Research 194, 63-66. http://dx.doi.org/10.1016/j.jvolgeores.2009.08.012

Gonzalez A.G., Shirokova L.S., Emnova E.E., Martinez R.E., Santana-Casiano M.J., Gonzalez-Davila M., Pokrovski G.S. (2010) Adsorption of copper on Pseudomonas aureofaciens: protective role of surface exopolysaccharides. Journal of Colloid and Interface Science 350 (1), 305-314.

 

2009

Pokrovski G.S., Tagirov B.R., Schott J., Hazemann J.-L., Proux O. (2009) A new view on gold speciation in sulfur-bearing hydrothermal fluids from in-situ X-ray absorption spectroscopy and quantum-chemical modeling. Geochimica et Cosmochimica Acta 73, 4506-4527. doi:10.1016/j.gca.2009.06.007.

Pokrovski G.S., Tagirov B.R., Schott J., Bazarkina E.F., Hazemann J.-L., Proux O (2009). An in situ X-ray absorption spectroscopy study of gold-chloride complexing in hydrothermal fluids. Chemical Geology 259, 17-29.

Tella M., Pokrovski G.S. (2009) Antimony(III) complexing with O-bearing organic ligands in aqueous solution: An X-ray absorption fine structure spectroscopy and solubility study. Geochimica et Cosmochimica Acta 73 (2), 268-290. doi:10.1016/j.gca.2008.10.014

 

2008

Perfetti E., Pokrovski G.S., Ballerat-BusserolLes K., Majer V., Gibert F. (2008) Densities and heat capacities of aqueous arsenious and arsenic acid solutions to 350°C and 300 bar, and revised thermodynamic properties of As(OH)3°(aq), AsO(OH)3°(aq) and iron sulfarsenide minerals. Geochimica et Cosmochimica Acta 72 (3), 713-731. doi: 10.1016/j.gca.2007.11.017

Pokrovski G.S., Borisova A.Yu., Harrichoury J.-C. (2008) The effect of sulfur on vapor-liquid fractionation of metals in hydrothermal systems. Earth & Planetary Science Lettres 266 (3-4), 345-362. doi:10.1016/j.epsl.2007.11.023.

Pokrovski G.S., Roux J., Hazemann J.-L., Borisova A. Yu., Gonchar A.A., Lemeshko M.P. (2008) In situ X-ray absorption spectroscopy measurement of vapour-brine fractionation of antimony at hydrothermal conditions. Mineralogical Magazine 72(2), 667-681.

Pokrovsky O.S., Pokrovski G.S., Feurtet-Mazel A. (2008) A structural study of cadmium interaction with aquatic microorganisms. Environmental Science and Technology 42 (15), 5527–5533.

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