Physico-chemical Mineralogy

Prof. Sumit Chakraborty

Professor of physico-chemical Mineralogy Ph.D. 1990, Arizona, U.S.A.

Sumit Chakraborty
Prof. Sumit Chakraborty

Application of Physical Chemistry through experiments, theory and in the field to understand timescales and mechanisms of geochemical and cosmochemical processes. Understanding the atomistic mechanisms of flow and creep of silicates and oxides. Application of diffusion controlled processes in Materials Science problems.

Experiments carried out at high pressures (to 15 GPa) and/or temperatures (upto 1800°C) provide kinetic (e.g. diffusion coefficients) and thermodynamic (e.g. activity coefficients) data. Many of the experiments use nanometer scale thin films of complex oxides and silicates produced using Pulsed Laser Deposition (PLD). This facility is unique in the Geosciences and enables us to produce thin films with complex geometry and chemistry. Analytical methods used include a particle accelerator (e.g. RBS, NRA, PIXE) at RUBION on campus, electron microprobes with high resolution FEG capability, dual beam SEM with EBSD attachment and capabilities of focused ion beam (FIB) thinning, CL-microscopes and white light interference microscopes in the department, and SIMS and analytical transmission electron microscopy (ATEM) with collaborators. Facilities for observations using Atomic Force Microscope (AFM)  and 3D Xray tomography are available on campus.

Theoretical work is directed towards development of methods and tools for diffusion chronometry and geospeedometry. Exploring relationships between thermodynamic and kinetic parameters, point defect thermodynamics of minerals, combined thermodynamic-kinetic modeling of geochemical processes (e.g. textural evolution using Phase field modeling) and integration of thermomechanical models with kinetic calculations (e.g. grain growth vs. diffusion) to constrain time scales of geological and cosmochemical processes are other theoretical and modelling based research directions.

Field areas of current research interest include volcanics at Campe Flegrei (Italy) and Eifel (Germany), high grade metamorphics for studying early Earth processes (Coorg block, S. India) and recent tectonic processes at Himalaya (Sikkim, Himachal Pradesh).

  • 1997 - Habilitation, University of Cologne
    Habilitationsschrift: Diffusionsvorgänge in geologisch relevanten Mineralen und Schmelzen (Diffusion processes in geologically relevant minerals and melts)
    Supervisor: Prof. H. Palme
  • 1990 - Ph.D, University of Arizona
    Dissertation: Multicomponent cation diffusion in aluminosilicate garnets: theory, experiments and applications.
    Supervisor: Prof. Jibamitra Ganguly
  • 1983 - M.Sc (Geology), Calcutta University, Calcutta, India
    Thesis: Petrology of the area around Bhawanipatna, Kalahandi District, Orissa, India.
    Supervisor: Prof. Aniruddha De
  • 1980 - B.Sc with honors in Geology, Presidency College, Calcutta University, Calcutta, India



(85) Li, W., Chakraborty, S., Nagashima, K., Costa, F. (2020): Multicomponent diffusion of F, Cl and OH in apatite with application to magma ascent rates. Earth and Planetary Science Letters 550, 1-13

(84) Chowdhury, P., Chakraborty, S., Gerya, T. V., Cawood, P. A., Capitanio, F. A. (2020): Peel-back controlled lithospheric convergence explains the secular transitions in Archean metamorphism and magmatism. Earth and Planetary Science Letters 538, 116224.




(83) Beyer, C., Dohmen, R., Rogalla, D., Becker, H.-W., Marquardt, K., Vollmer, C., Hagemann, U., Hartmann, N., Chakraborty, S. (2019): Lead diffusion in CaTiO3: A combined study using Rutherford backscattering and TOF-SIMS for depth profiling to reveal the role of lattice strain in diffusion processes. American Mineralogist 104:4, 557-568

(82) Chowdhury, P., Chakraborty, S. (2019): Slow Cooling at Higher Temperatures Recorded within High-P Mafic Granulites from the Southern Granulite Terrain, India: Implications for the Presence and Style of Plate Tectonics near the Archean–Proterozoic Boundary. Journal of Petrology Volume 60:3, 441–486




(81) Faak, K., Chakraborty, S., Coogan, L. A., Dohmen, R. (2018): Comment on ‘Formation of fast-spreading lower oceanic crust as revealed by a new Mg–REE coupled geospeedometer’ by Sun and Lissenberg. Earth and Planetary Science Letters 502, 284-286

         Referring comment: Sun, C., Lissenberg, C. J. (2018) Caveats and challenges in geospeedometry: A reply to Faak et al.’s critique of the Mg–REE coupled geospeedometry. Earth and Planetary Science Letters 502, 287-290




(80) Chakraborty, S. (2017): A New Mechanism for Upper Crustal Fluid Flow Driven by Solitary Porosity Waves in Rigid Reactive Media?. Geophysical Research Letters 44:19, 10324-10327

(79) Chowdhury P., Gerya T., Chakraborty, S. (2017): Emergence of silicic continents as the lower crust peels off on a hot plate-tectonic Earth. Nature Geoscience 10, 698–703

  referring comment: Magni, V. (2017): Plate tectonics: Crustal recycling evolution. Nature Geoscience 10, 623–624

(78) Chakraborty, S., Mukhopadhyay, D., Chowdhury, P., Rubatto, D., Anzckiewicz, R. Trepmann, C., Gaidies, F., Sorcar, N. and Dasgupta, S. (2017) Channel Flow and Localized Fault Bounded Slice Tectonics (LFBST): Insights from petrological, structural, geochronological, and geospeedometric studies in the Sikkim Himalaya NE India. Lithos 282–283, 464–482.

(77) Mukhopadhyay, D., Chakraborty, S., Trepmann, C., Rubatto, D., Anzckiewicz, R., Gaidies, F., Dasgupta, S. and Chowdhury, P. (2017): The nature of the Main Central Thrust: Structural, geochronological and petrological constraints from the Sikkim Himalaya, NE India. Lithos 282–283, 447–463.

(76) Bhowmik, S. K., Chakraborty, S. (2017): Sequential kinetic modelling: A new tool decodes pulsed tectonic patterns in early hot orogens of Earth. Earth and Planetary Science Letters 460: 171-179

(75) Fanara, S., Sengupta, P., Becker, H.-W., Rogalla, D., Chakraborty, S. (2017): Diffusion across the glass transition in silicate melts: Systematic correlations, new experimental data for Sr and Ba in calcium-aluminosilicate glasses and general mechanisms of ionic transport. Journal of Non-Crystalline Solids 455: 6-16




(74) Dohmen, R., Ter Heege, J.H., Becker, H.-.W., Chakraborty, S. (2016): Fe-Mg inerdiffusion in orthopyroxene. Amer. Mineral. 101, 2210 – 2221.

(73) Chakraborty, S.,Anczkiewicz, R., Gaidies, F., Rubatto, D., Sorcar, N., Faak, K., Mukhopadhyay, D. K., Dasgupta, S.(2016): A review of thermal history and timescales of tectonometamorphic processes in Sikkim Himalaya (NE India) and implications for rates of metamorphic processes. Journal of Metamorphic Geology 34, 785–803

(72) Kahl, M., Chakraborty, S., Pompilio, M. and Costa, F. (2016) Constraints on the nature and evolution of the magma plumbing system of Mt. Etna volcano (1991 – 2008) from combined thermodynamic and kinetic modelling of the compositional record of minerals. Correction. Journal of Petrology 56:10, 2025–2068.




(71) Vogt, K., Dohmen, R., Chakraborty, S. (2015): Fe-Mg diffusion in spinel: New experimental data and a point defect based model. American Mineralogist 100, 2112–2122.

(70) Kahl, M., Chakraborty, S., Pompilio, M. and Costa, F. (2015) Constraints on the nature and evolution of the magma plumbing system of Mt. Etna volcano (1991 – 2008) from a combined thermodynamic and kinetic modelling of the compositional record of minerals. Journal of Petrology 56, 2025–2068.

(69) Faak, K., Coogan, L.A., Chakraborty, S. (2015): Near conductive cooling rates in the upper-plutonic of crust formed at the East Pacific Rise. Earth and Planetary Science Letters 423, 36-47

(68) Gaidies, F., Petley-Ragan, A., Chakraborty, S., Dasgupta, S., Jones, P. (2015): Constraining the conditions of Barrovian metamorphism in Sikkim, India: P-T-t paths of garnet crystallization in the Lesser Himalayan Belt. Journal of Metamorphic Geology 33:1, 32-44




(67) Anzckiewicz, R., Chakraborty, S., Dasgupta, S., Mukhopadhyay, D., Koltonik, K. (2014): Timing, duration and inversion of prograde Barrovian metamorphism constrained by high resolution Lu-Hf garnet dating: A case study from the Sikkim Himalaya, NE India. Earth and Planetary Science Letters 407, 70–81

(66) Faak, K., Coogan, L.A., Chakraborty, S. (2014): A new Mg-in-plagioclase geospeedometer for the determination of cooling rates of mafic rocks. Geochimica et Cosmochimica Acta 140, 691–707

(65) Neogi, S., Bolton, E.W., Chakraborty, S. (2014): Timescales of disequilibrium melting in the crust: constraints from modelling the distribution of multiple trace elements and a case study from the Lesser Himalayan rocks of Sikkim. Contributions to Mineralogy and Petrology, 168:2

(64) Sorcar, N., Hoppe, U. Dasgupta, S. and Chakraborty, S. (2014) High-temperature cooling histories of migmatites from the High Himalayan Crystallines in Sikkim, India: rapid cooling unrelated to exhumation? Contributions to Mineralogy and Petrology 167:957, DOI: 10.1007/s00410-013-0957-3.




(63) Mueller, T., Dohmen, R., Becker, H.W., ter Heege, J., Chakraborty, S. (2013): Fe-Mg interdiffusion rates in clinopyroxene: experimental data and implications for Fe-Mg exchange geothermometers. Contributions to Mineralogy and Petrology 166:6, 1563-1576

(62) Faak, K., Chakraborty, S., Coogan, L.A. (2013): Mg in plagioclase: Experimental calibration of a new geothermometer and diffusion coefficients. Geochimica et Cosmochimica Acta 123, 195-217

(61) Kahl, M., Chakraborty, S., Costa, F., Pompilio, M., Liuzzo, M., Viccaro, M. (2013): Compositionally zoned crystals and real-time degassing data reveal changes in magma transfer dynamics during the 2006 summit eruptive episodes of Mt. Etna. Bulletin of Volcanology 75:692

(60) Ganguly, J., Tirone M., Chakraborty, S., Domanik, K. (2013): H-chondrite parent asteroid: A multistage cooling, fragmentation and re-accretion history constrained by thermometric studies, diffusion kinetic modeling and geochronological data. Geochimica et Cosmochimica Acta 105, 206–220




(59) Rubatto, D., Chakraborty, S., Dasgupta, S. (2013):Timescales of crustal melting in the Higher Himalayan Crystallines (Sikkim, Eastern Himalaya) inferred from trace element-constrained monazite and zircon chronology. Contributions of Mineralogy and Petrology 165, 349-372

(58) Borinski, S.A., Hoppe, U., Chakraborty, S., Ganguly, J., Bhowmik, S.K. (2012): Multicomponent diffusion in garnets I: general theoretical considerations and experimental data for Fe–Mg systems. Contributions to Mineralogy and Petrology 164, 571–586

(57) Faak, K., Chakraborty, S., Dasgupta, S. (2012): Petrology and tectonic significance of metabasite slivers in the Lesser and Higher Himalayan domains of Sikkim, India. Journal of metamorphic Geology 30, 599–622

(56) Lopez-Galilea, I., Huth, S., Theisen, W., Fockenberg, T., Chakraborty, S. (2012): Effect of high pressure and high temperature on the microstructural evolution of a single crystal Ni-based superalloy. Journal of Materials Science 48:1, 348-358




(55) Xu, J., Yamazaki, D., Katsura, T., Wu,X., Remmert, P., Yurimoto, H., Chakraborty, S. (2011) Silicon and Magnesium diffusion in single crystal of MgSiO3 perovskite. Journal of Geophysical Research 116:12, 1978–2012.

(54) Kahl, M., Chakraborty, S., Costa, F. and Pompilio, M. (2011) Dynamic plumbing system beneath volcanoes revealed by kinetic modeling and the connection to monitoring data: An example from Mt. Etna. Earth Planetary Science Letters, 308, 11–22.

(53) Sengupta, P., Rogalla, D., Becker, H.-W., Dey, G.K. and Chakraborty, S. (2011) Development of graded Ni-YSZ composite coating on Alloy 690 by pulsed laser deposition technique to reduce hazardous metallic nuclear waste inventory. Journal of Hazardous Materials 192, 208–221.

(52) Sengupta, P., Fanara, S. and Chakraborty, S. (2011) Preliminary study on calcium aluminosilicate glass as a potential host matrix for radioactive 90Sr – an approach based on natural analogue study. Journal of Hazardous Materials, 190, 229–239.




(51) Chakraborty, S. (2010): Diffusion coefficients in olivine, wadsleyite and ringwoodite. In: Diffusion in Minerals and Melts, Reviews in Mineralogy and Geochemistry 72, eds. Y. Zhang and D. Cherniak, Mineralogical Society of America, 603–639. (invited article).

(50) Dohmen, R., Kasemann, S., Coogan, L.C. and Chakraborty, S. (2010): Diffusion of Li in olivine: I. Experimental observations and a multi species diffusion model. Geochimica et Cosmochimica Acta 74, 274–292.

(49) Costa, F., Coogan, L.C. and Chakraborty, S. (2010): Decadal timescales for magma mixing and crystal cumulate-magma interaction processes beneath mid-ocean ridges obtained from zoning patterns in plagioclase phenocrysts. Contributions to Mineralogy and Petrology 159, 371–387.




(48) Harte, B., Taniguchi, T. and Chakraborty, S. (2009): Diffusion in Diamond. II. High Pressure temperature experiments. Mineralogical Magazine 73, 201–204.

(47) Shimojuku, A., Kubo, T., Ohtani, E., Nakamura, T, Okazaki, R., Dohmen, R. and Chakraborty, S. (2009): Si and O diffusion in (Mg,Fe)2SiO4 wadsleyite and ringwoodite and its implications for the rheology of the mantle transition zone. Earth and Planetary Science Letters 284, 103-112.

(46) Holzapfel, C., Chakraborty, S., Rubie, D.C. and Frost, D.J. (2009): Fe-Mg interdiffusion in wadsleyite: The role of pressure, temperature and composition and the magnitude of jump in diffusion rates at the 410 Km discontinuity. Physics of the Earth and Planetary Interior 172, 28–33.

(45) Dasgupta, S., Chakraborty, S. and Neogi, S. (2009) Petrology of an inverted Barrovian sequence of metapelites in Sikkim Himalaya, India: constraints on the tectonics of inversion. American Journal of Science 309, 43–84.




(44) Costa, F., Dohmen, R. and Chakraborty, S. (2008): Time Scales of magmatic Processes from modeling the zoning patterns of crystals. Reviews in Mineralogy and Geochemistry 69, 545–594, Minerals, Inclusions and Volcanic Processes, Putirka, K.D. and Tepley, F.J. III (Eds.)

(43) Chakraborty, S. (2008): Diffusion in solid silicates: A tool to track timescales of processes comes of age. Annual Reviews of Earth and Planetary Sciences 36, 153–190.

(42) Faccenda, M. Gerya, T.V. and Chakraborty, S. (2008): Styles of post-subduction collisional orogeny: influence of convergence velocity, crustal rheology and radiogenic heat production. Lithos 103, 257–287.

(41) Costa, F. and Chakraborty, S. (2008): The effect of water on Si and O diffusion rates in olivine and implications for transport properties and processes in the upper mantle. Physics of Earth and Planetary Interiors 166, 11–29.




(40) Chakraborty, S., Dasgupta, S. and Neogi, S. (2007): Nucleation kinetics controlled by chemical overstepping and its tectonic implications: an example from the Sikkim Himalaya. European Journal of Mineralogy 19:6, 791–803.

(39) Holzapfel, C., Chakraborty, S., Rubie, D.C. and Frost, D.J. (2007): Effect of Pressure on Fe-Mg, Ni and Mn diffusion in (FexMg1-x) Si2O4 olivine between 6 and 15 GPa. Physics of Earth and Planetary Interiors 162, 186–198.

(38) Dohmen, R. and Chakraborty, S. (2007): Fe-Mg diffusion in olivine II: Point defect chemistry, diffusion mechanisms and a model for calculation of diffusion coefficients in natural olivine. Physics and Chemistry of Minerals 34, 409–430.

(37) Dohmen, R., Becker, H.-W, and Chakraborty, S. (2007): Fe-Mg diffusion coefficients in olivine. Part I: Experimental determination between 700 and 1200 °C as a function of composition, crystal orientation and oxygen fugacity. Physics and Chemistry of Minerals 34, 389–407.




(36) Chakraborty, S. (2006): Diffusion modeling as a tool for constraining timescales of evolution of metamorphic rocks. Mineralogy and Petrology 88, 7–27.




(35) Coogan, L.A.C., Kasemann, S. and Chakraborty, S. (2005): Cooling rates of young oceanic upper crust: insights from Lithium geospeedometry. Earth and Planetary Science Letters, 240, 415–424.

(34) Faryad, S.W. and Chakraborty, S. (2005): Duration of high pressure metamorphic events obtained from multicomponent diffusion modeling of garnet: A case study from the Eastern Alps. Contributions to Mineralogy and Petrology 150, 306–318.

(33) Chakraborty, S., Dasgupta, S. and Neogi, S. (2003, published in 2005) Generation of migmatites and the nature of partial melting in a continental collision zone setting: An example from the Sikkim Himalaya. Indian Journal of Geology, Aniruddha De Memorial Volume 75:1-4, 38–53.

(32) Coogan, L., Hain, A., Stahl, S. and Chakraborty, S. (2005): Experimental determination of the diffusion coefficient for calcium in olivine between 900°C and 1500°C. Geochimica et Cosmochimica Acta 69:14, 3683–3694.

(31) Chakraborty, S. (2005): Diffusion studies in Earth and Planetary Sciences, Proceedings of DIMAT (Diffusion in Materials) Conference, Cracow, Poland, Trans-Tech Publishers. Diffusion in Materials Forum Series 237-240, 1081–1092.




(30) Costa, F. and Chakraborty, S. (2004): Decadal time gaps between mafic intrusion and silicic eruption obtained from chemical zoning patterns in olivine. Earth and Planetary Science Letters 227, 517–530.

(29) Petry, C., Chakraborty, S. and Palme, H. (2004): Experimental determination of Ni diffusion coefficients in olivine and their dependence on temperature, composition, oxygen fugacity, and crystallographic orientation. Geochimica et Cosmochimica Acta 68, 4179–4188.

(28) Trepmann, C.A., Stöckhert, B. and Chakraborty, S. (2004): Oligocene trondhjemitic dikes in the Austroalpine basement of the Pfunderer Berge, Südtirol level of emplacement and metamorphic overprint. European Journal of Mineralogy, 16, 641–659.




(27) Dohmen, R. and Chakraborty, S. (2003): Mechanism and kinetics of element and isotopic exchange mediated by a fluid phase. American Mneralogist 88, 1251–1270.

(26) Costa, F., Chakraborty, S. and Dohmen, R. (2003): Diffusion coupling between trace and major elements and a model for calculation of magma residence times using plagioclase. Geochimica et Cosmochimica Acta 67:12, 2189–2200.

(25) Dohmen, R., Chakraborty, S., Palme, H. and Rammensee, W. (2003): The role of element solubility on the kinetics of element partitioning: in situ observations and a thermodynamic-kinetic model. Journal of Geophysycal Research 108:3, 2157.




(24) Dohmen, R., Chakraborty, S. and Becker, H.-W. (2002): Si and O diffusion in Fe-bearing olivine and implications for characterizing plastic flow in the mantle. Geophysical Research Letters 29:21, 26–1 to 26–4.

(23) Dohmen, R., Becker, H.-W., Meissner, E., Etzel, T. and Chakraborty, S. (2002): Production of silicate thin films using pulsed laser deposition (PLD) and applications to studies in mineral kinetics. European Journal of Mineralogy 14, 1155–1168.




(22) Chakraborty, S. and Dohmen, R. (2001): Some aspects of the role of intergranular fluids in the compositional evolution of metamorphic rocks. Proceedings of Indian Academy of Science (Volume in honor of Prof. S. Sen) 110, 293–303. (Also accessible at:

(21) Cole, D.R. and Chakraborty, S. (2001): Rates and mechanisms of isotope exchange. invited chapter in Stable Isotope Geochemistry. Reviews in Mineralogy and Geochemistry 43, 83–223, J. Valley and D.R. Cole eds., MSA Short Course on Stable isotopes held in Boston, U.S.A., Nov. 2001.

(20) Holzapfel C., Courtial P., Dingwell D.B., Chakraborty S. and Palme H. (2001): Experimental determination of partial molar volumes of Ga2O3 and GeO2 in silicate melts: implications for the pressure dependence of metal-silicate partition coefficients. Chemical Geology 174, 33–49.




(19) Chakraborty, S., Knoche, R., Schulze, H., Rubie, D.C., Dobson, D., Ross, N.L. and Angel, R.J. (1999): Enhancement of cation diffusion rates across the 410-kilometer discontinuity in Earth‘s mantle. Science 283, 362–365.




(18) Dohmen, R., Chakraborty, S., Palme, H. and Rammensee, W. (1998): Solid-solid reactions mediated by a gas phase: An experimental study of reaction progress and the role of surfaces in the system Olivine + Fe-metal. American Mineralogist 83, 970–984.

(17) Ganguly, J., Cheng, W. and Chakraborty, S. (1998): Cation diffusion in aluminosilicate garnets: experimental determination in pyrope-almandine diffusion couples. Contributions to Mineralogy and Petrology 131, 171–180.

(16) Meissner, E., Sharp, T.G. and Chakraborty, S. (1998): Quantitative measurement of short compositional profiles using analytical transmission electron microscopy (ATEM). American Mineralogist 83, 546–552.




(15) Poe, B.T., McMillan, P.F., Rubie, D.C., Chakraborty, S., Yarger, J. and Diefenbacher, J. (1997): Silicon and oxygen self diffusion in aluminosilicate liquids to 15 GPa and 2800 K. Science 276, 1245–1248.

(14) Chakraborty, S. (1997): Rates and mechanisms of Fe-Mg interdiffusion in olivine at 980–1300oC. Journal of Geophysical Research 102:6, 12317–12331.

(13) Holzheid, A., Palme, H. and Chakraborty, S. (1997): The activities of NiO, CoO and FeO in silicate melts. Chemical Geology 139, 21–38.




(12) Niemeier, D., Chakraborty, S. and Becker, K.D. (1996): A high temperature Mössbauer study of the directional geometry of diffusion in fayalite, Fe2SiO4. Physics and Chemistry of Minerals 23, 284.

(11) Ganguly, J., Chakraborty, S., Sharp, T.G. and Rumble, D. (1996): Constraint on the time scale of biotite grade metamorphism during Acadian Orogeny from a natural garnet-garnet diffusion couple. American Mineralogist, 81, 1208–1216.

(10) Chakraborty, S. and Rubie, D.C. (1996): Mg tracer diffusion in aluminosilicate garnets at 750–850oC, 1 atm. and 1300oC, 8.5 GPa. Contributions to Mineralogy and Petrology 122, 406–414.




(9) Chakraborty, S. (1995): Diffusion in silicate melts. Reviews in Mineralogy vol. 32 , 411–504 (invited chapter for MSA short course on Structure, Dynamics and properties of Silicate melts held in Napa Valley, California, Dec.9-10).

(8) Chakraborty, S., Dingwell, D.B. and Rubie, D.C. (1995): Multicomponent diffusion in ternary silicate melts in the system K2O-Al2O3-SiO2 II. Mechanisms, systematics and geological applications. Geochimica et Cosmochimica Acta 59, 265–277.

(7) Chakraborty, S., Dingwell, D.B. and Rubie, D.C. (1995): Multicomponent diffusion in ternary silicate melts in the system K2O-Al2O3-SiO2 I. Experimental measurements. Geochimica et Cosmochimica Acta, 59, 255–264.




(6) Chakraborty, S., Farver, J.R., Yund, R.A. and Rubie, D.C. (1994) Mg tracer diffusion in synthetic forsterite and San Carlos Olivine as a function of P, T and fO2. Physics and Chemistry of Minerals 21:8, 489–500.

(5) Chakraborty, S. and Ganguly, J. (1994): A method to constrain thermodynamic mixing properties and diffusion data in multicomponent solutions, in: Reactive phase formation at interfaces and diffusion processes, eds. Bocquet, J.L. and Limoge, Y., Materials Science Forum 155-156, Trans Tech Publishers 279–284.

(4) Chakraborty, S. (1994): Relationships between thermodynamic mixing and diffusive transport in multicomponent solutions: some constraints and potential applications. J. Phys. Chem. 98, 4923–4926.




(3) Chakraborty, S., Dingwell, D.B. and Chaussidon, M. (1993): Chemical diffusivity of Boron in melts of haplogranitic composition. Geochimica et Cosmochimica Acta 57, 1741–1752.




(2) Chakraborty, S. and Ganguly, J. (1992): Cation diffusion in aluminosilicate garnets: experimental determination in spessartine-almandine diffusion couples, evaluation of effective binary diffusion coefficients, and applications. Contributions to Mineralogy and Petrology 111, 74–86.




(1) Chakraborty, S. and Ganguly, J. (1991): Compositional zoning and cation diffusion in aluminosilicate garnets, in: Diffusion, Atomic ordering and Mass Transport -- selected problems in Geochemistry ed. J. Ganguly. Advances in Physical Geochemistry 8, Springer-Verlag, New York, 120–170.


Prof. J. Ganguly (Arizona)
Dr. E.W. Bolton (Yale)


Prof. S. Dasgpta (IISER - Kolkata)
Prof. D. Mukhopadhyay (IIT-Roorkee)
Prof. S. Bhowmik (IIT – Khargapur)
Priyadarshi Chowdhury (NISER – Bhubaneshwar)


Dr. Astrid Holzheid (Kiel)
Dr. Axel Gerdes (Frankfurt)
Prof. Dr. Carsten Münker (Köln)
Dr. Hans Schminke (Kiel)
Dr. Sumita Mari (Kiel)
Dr. François Holz (Hannover)
Dr. Renat Almeev (Hannover)
Dr. Artem Lechner (Hannover)
Dr. Felix Marzer (Hannover)
Dr. Jürgen Köpke (Hannover)


Dr. T. Gerya (ETH – Zürich)


Dr. Sampriti Basak (Copenhagen)


Carlo Pellulo, Ilenia Arienzo (Naples)


Prof. Dr. Fernado Bea (Granada)
Dr. Aitor Cambeses


Dr. K. Marquardt (London)


Prof. Dr. Biswajit Basu (Dublin)


Dr. M. Kahl (Reykjavik)


Weiran Li (Hong Kong)

BSc. Courses

  • Field work on rock description in the field

MSc. Courses

  • Thermodynamics
  • Kinetics
  • Igneous Petrology




  • President of the Geochemical Society


  • Dana Medal 2016 from the Mineralogical Society of America (MSA)


  • Fellow of the Mineralogical Society of America (MSA)



  • Distinguished Lecturer of the Mineralogical Society of America (MSA)



  • Principal Investigator, Materials Research Department, Ruhr University Bochum



  • Fellow of the Geochemical Society
  • Fellow of the European Association of Geochemistry



  • Best Article of 1998 in the American Mineralogist Award, Mineralogical Society of America



  • Tucson Gem and Mineral Society graduate research fellowship



  • BS Butler Fellowship, Department of Geosciences, University of Arizona (best graduate student)
  • Selected for the Jawaharlal Nehru Memorial Trust Foundation Scholarship - selected as one of ten candidates from across India and across all academic disciplines


Guest stays in:

  • University of California, Berkeley, USA; University of Oviedo, Spain; University of Dublin, Ireland; Trinity University, Dublin, Ireland; IISER Kolkata, India




  • Elected Vice President of the Geochemical Society


  • Joint Chair (with Adina Paytan) of the Science Committee, Goldschmidt Conference, Honolulu (taking place as a virtual conference during the corona pandemic)


2018, 2019

  • Theme Chair (together with others) in Nanoscience in Geochemistry themes at the Goldschmidt Conferences in Boston and Barcelona



  • Chairman of the Examination Committee, Institute GMG, Ruhr University Bochum



  • Director of RUBION, Ruhr University Bochum



  • Appointment officer, Ruhr University Bochum



  • Elected to the Board of Directors of the Mineralogical Society of America (MSA) for 2010 - 2012



  • Member of the Senate, Ruhr University Bochum




  • Sikkim and Himachal Pradesh, Himalaya, India (Metamorphism and Partial melting in a recently active continental collision zone)
  • Madurai Block, Dharwar Craton and the Coorg Block, South India (Rates and timescales of thermal and mechanical processes in the Early Archean Earth)
  • Recent volcanics from Mt. Etna, Sicily (timescales of magmatism studied in connection with surface monitoring data and mechanical modelling, collaboration with the group of Klaus Hackl at mechanical engineering)

Other natural samples being studied come from:

  • Hess Deep, Pito Deep and various other sites along the Mid Atlantic and Costa Rica rifts, obtained from the Ocean drilling project (ODP).
  • Chondrites (e.g. Allende) and various Mars meteorites

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DFG Forschergruppe 2881

Diffusion Chronometry of magmatic systems

Geological processes occur in and on the Earth over a range of timescales that form a nested, hierarchical structure. Determining the durations of processes that occur on the shorter end of this time-spectrum has been a challenge. The tools of diffusion chronometry have emerged as a very promising method to provide solutions in many situations.

Zentrale Enrichtung für Ionenstrahlen und Radionuklide


Unsere Mission ist es, Methoden und Geräte zur Verfügung zu stellen, die einzelne Arbeitsgruppen nicht betreiben können. Unser Fokus liegt dabei auf ionenstrahl-basierten Techniken zur Materialanalyse und -modifikation, dem sicheren Umgang mit radioaktiven Isotopen sowie der hochauflösenden Mikroskopie.