ICTAS Doctoral Scholar (link to ICTAS website)

Research Interests
Thermodynamics of geologic fluid systems. Specific projects include:

• Solubility and speciation
  
• PVTX properties and phase relations of geologic fluids
• Multiphase flow and reactive transport modeling
  
• Aqueous fluids and silicate melts
  
• Experimental petrology and hydrothermal experiments
  
• Vibrational spectroscopy
  
• Molecular structure of silicate melts and glasses

Publications

Steele-MacInnis, M., Lecumberri-Sanchez, P. and Bodnar, R.J. (2012) HokieFlincs_H2O-NaCl: A Microsoft Excel spreadsheet for interpreting microthermometric data from fluid inclusions based on the PVTX properties of H₂O-NaCl. Computers & Geosciences (in press)

Steele-MacInnis, M., Han, L. Lowell, R.P., Rimstidt, J.D. and Bodnar, R.J. (2012) The role of fluid phase immiscibility in quartz dissolution and precipitation in sub-seafloor hydrothermal systems. Earth and Planetary Science Letters 321-322, 139-151

Steele-MacInnis, M., Han, L. Lowell, R.P., Rimstidt, J.D. and Bodnar, R.J. (2012) Quartz precipitation and fluid-inclusion characteristics in sub-seafloor hydrothermal systems associated with volcanogenic massive sulfide deposits. Central European Journal of Geosciences [special issue: papers from ECROFI-XXI Leoben] (in press)

Spiekermann, G., Steele-MacInnis, M., Jahn, S. and Schmidt, C. (2012) Vibrational analysis and Raman spectra of SiO₂ polymers in H₂O using ab initio molecular dynamics. Journal of Chemical Physics (in review)

Steele-MacInnis, M., Esposito, R. and Bodnar, R. J. (2011) Thermodynamic model for the effect of post-entrapment crystallization on the H₂O-CO₂ systematics of vapor-saturated, silicate melt inclusions. Journal of Petrology 52, 2461-2482

Steele-MacInnis, M., Bodnar, R. J. and Naden, J. (2011) Numerical model to determine the composition of H₂O-NaCl-CaCl₂ fluid inclusions based on microthermometric and microanalytical data Geochimica et Cosmochimica Acta 75, 21-41

Recent Conference Abstracts (last two years)

Steele-MacInnis, M., Han, L., Lowell, R.P., Rimstidt, J.D., Bodnar, R.J. (2012) Quartz precipitation and fluid-inclusion characteristics in submarine hydrothermal systems. Goldschmidt Conference, Montréal QC, Canada

Spiekermann, G. Steele-MacInnis, M., Schmidt, C., Kowalski, C.C., Jahn, S. (2012) Ab initio vibrational properties of silica species in aqueous fluids. Goldschmidt Conference, Montréal QC, Canada

Buchanan, A., Hanchar, J.M., Steele-MacInnis, M., Crowley, J., Valley, P.M., Fisher, C.M., Piccoli, P.M., Fournelle, J. (2012) Tracking hydrothermal alteration and mineralization in rock-forming and accessory minerals from the Lyon Mountain Granite and related iron oxide-copper gold (IOCG) ores from the Adirondack Mountains, New York State. Geological Association of Canada – Mineralogical Association of Canada (GAC-MAC) 2012, St. John’s NL, Canada

Spiekermann, G., Steele-MacInnis, M., Kowalski, P., Jahn, S. and Schmidt, C. (2012) Vibrational properties of silica species in MgO-SiO₂ glasses from ab initio molecular dynamics. European Geosciences Union General Assembly 2012, Vienna, Austria

Spiekermann, G., Steele-MacInnis, M., Kowalski, P., Jahn, S. and Schmidt, C. (2012) Vibrational analysis of silica species in MgO-SiO₂ glasses using ab initio molecular dynamics. Experimental Mineralogy, Petrology and Geochemistry, Kiel, Germany

Spiekermann, G., Steele-MacInnis, M., Jahn, S. and Schmidt, C. (2011) Mode-projected vibrational analysis and Raman spectra of silica species in aqueous solution using ab initio molecular dynamics. 9^th Silicate Melt Workshop, La Petite Pierre, Alsace, France

Spiekermann, G., Steele-MacInnis, M., Jahn, S. and Schmidt, C. (2011) Mode-projected vibrational analysis and Raman spectra of silica species in aqueous solution using ab initio molecular dynamics. European Conference on Mineralogy and Spectroscopy (ECMS) Potsdam, Germany

Schmidt, C., Steele-MacInnis, M. and Wilke, M. (2011) Raman spectroscopic study of zircon to high pressure and temperature. European Conference on Mineralogy and Spectroscopy (ECMS) Potsdam, Germany

Steele-MacInnis, M., Schmidt, C. and Bodnar, R. J. (2011) Silica Speciation in Aqueous Sodium Silicate Solutions. Goldschmidt Conference, Prague, Czech Republic

Schmidt, C., Steele-MacInnis, M. and Wilke, M. (2011) Zircon as a Raman Spectroscopic Pressure Sensor. Goldschmidt Conference, Prague, Czech Republic

Steele-MacInnis, M., Han, L., Lowell, R. P., Rimstidt, J. D. and Bodnar, R. J. (2011) The role of fluid-phase immiscibility in quartz dissolution and precipitation in sub-seafloor hydrothermal systems: Implications for fluid inclusion studies of volcanogenic massive-sulphide deposits. European Current Research on Fluid Inclusions (ECROFI-XXI), Leoben, Austria

Steele-MacInnis, M., Esposito, R. and Bodnar, R. J. (2011) The effect of post-entrapment crystallization on the H₂O and CO₂ concentrations of rhyolitic (silica-rich) melt inclusions, and implications for magma degassing paths. European Current Research on Fluid Inclusions (ECROFI-XXI), Leoben, Austria

Lecumberri-Sanchez, P., Steele-MacInnis, M. and Bodnar, R. J. (2011) A revised model for the interpretation of pressure and salinity from fluid inclusions that homogenize by halite disappearance. European Current Research on Fluid Inclusions (ECROFI-XXI), Leoben, Austria