• Amy Hoffman
Assistant Professor of Chemistry



Office: Hac 305

Office: HAC 305
Lab: ​HAC 303

Fall  2016 Office Hours: On leave of absence


Professor Hofmann received her Ph.D. in Geochemistry.  Her dissertation explored the relationship between kinetic and thermodynamic driving forces and the sub-micron-scale distribution of cationic impurities within the crystal lattices of two petrologically significant minerals.  Professor Hofmann then spent the following three years as a postdoctoral fellow at Lawrence Berkeley National Laboratory where, using a combination of experimental and computational techniques, she investigated molecular-scale mechanisms responsible for the separation of isotopes in solution. During this time, she also served as a visiting faculty member in the Department of Earth & Planetary Sciences at UC Berkeley.


B.A., Franklin & Marshall College, 2004

M.S., California Institute of Technology, 2008

Ph.D, California Institute of Technology, 2010


Publications 2007–Present

Hofmann, A. E.; Baker, M. B.; Eiler, J. M.  Sub-micron-scale trace-element distributions in zircons of known provenance: Implications for Ti-in-zircon thermometry.  Accepted for publication in Contributions to Mineralogy and Petrology 2014.

Eiler, J. M.; Berquist, B.; Bourg, I.; Cartigny, P.; Farquhar, J.; Gagnon, A.; Guo, W.; Halevy, I.; Hofmann, A.; Larson, T. E.; Levin, N.; Schauble, E.; Stolper, D. Frontiers of stable isotope geoscience. Chemical Geology. 2014, 372: 119–143. DOI: 10.1016/j.chemgeo.2014.02.006.

Hofmann, A. E.; Baker, M. B.; Eiler, J.M. An experimental study of Ti and Zr partitioning among zircon, rutile, and granitic melt. Contributions to Mineralogy and Petrology 2013166: 235–253.  DOI: 10.1007/s00410-013-0873-6.

Eiler, J.; Cartigny, P.; Hofmann, A. E.; Piasecki, A.  Non-canonical mass laws in equilibrium isotopic fractionations: empirical evidence from the vapor pressure isotope effect of SF6. Geochimica et Cosmochimica Acta 2013, 107: 205–219. DOI: 10.1016/j.gca.2012.12.048.

Hofmann A. E.; Bourg I. C.; DePaolo, D.J. Ion desolvation as a mechanism for kinetic isotope fractionation in aqueous systems. Proceedings of the National Academy of Sciences USA 2012, 109(46): 18689–18694.  DOI: 10.1073/pnas.1208184109.

Hofmann, A. E.; Valley, J. W.; Watson, E.B.; Cavosie, A. J.; Eiler, J. M. Sub-micron scale distributions of trace elements in zircon.  Contributions to Mineralogy and Petrology 2009, 158 (3): 317–335.  DOI: 10.1007/s00410-009-0385-6.

Milman-Barris, M.; Beckett, J. R.; Baker, M. B.; Hofmann, A. E.; Morgan, Z.; Crowley, M.; Vielzeuf, D.; Stolper, E.  Zoning of phosphorus in magmatic olivine. Contributions to Mineralogy and Petrology 2008, 155(6): 739–765.

Yoder,  C. H.; Agee,  T. M.; Ginion, K. E.; Hofmann, A. E.; Ewanichak,  J. E.; Schaeffer Jr., C. D.; Carroll, M. J.; Schaeffer, R. W.; McCaffrey, P. F. The relative stabilities of the copper hydroxyl sulphates. Mineralogical Magazine 2007, 71(5): 571–577.