Hans P. Eugster

Hans Peter Eugster (November 19, 1925, in Igis, Switzerland – December 17, 1987, in Baltimore, US) was a Swiss-American geochemist, mineralogist, and petrologist.

Education Eugster studied at ETH Zurich with Diplom in 1948 and D.Sc. in 1951 under Paul Niggli with a dissertation on metamorphic recrystallization in the eastern part of the Aar massif. As a postdoctoral fellow, Eugster studied optical spectroscopy from 1951 to 1952 at the Massachusetts Institute of Technology, where he was also influenced by research on petrology done by James Burleigh Thompson's team at Harvard University.

Personal life His brother was a chemist and professor at the University of Zurich. He was married to Elaine Koppelman.

Selected works Heterogeneous reactions involving oxidation and reduction at high pressures and temperatures, J. Chem. Phys., Vol. 26, 1957, pp. 1760–1761 with Charles Milton: Mineral assemblages in the Green River Formation, in P.H. Abelson, Researches in Geochemistry, Wiley 1959, pp. 18–150 Reduction and Oxidation in Metamorphism, in P.H. Abelson, Researches in Geochemistry, Wiley 1959, pp. 397–426 with B.M. French. Experimental control of oxygen fugacities by graphite-gas equilibriums, J. Geophys. Res., Vol. 70, 1965, pp. 1529–1539. with D.R. Wones: Stability of Biotite: Experiment, Theory, and Application., American Mineralogist, Vol. 50, 1965, pp. 1228–1272. with J. L. Munoz: Experimental control of fluorine reactions in hydrothermal systems. American Mineralogist, Vol. 54, 1969, pp. 943–959. with L.A. Hardie: The Evolution of Closed Basin Brines, Mineralogical Society of America Special Publ., 3, 1970, pp. 273–290 The Beginnings of Experimental Petrology, Science, Vol. 173, 1971, pp. 481–489 with C.E. Harvie, J.H. Weare, L. A. Hardie. Evaporation of sea water: Calculated mineral sequences, Science, Vol. 208, 1980, pp. 498–500. Oil shales, evaporites and ore deposits. Geochim. et Cosmochim. Acta, Vol. 49, 1985, pp. 619–635. with R.J. Spencer, B.F. Jones, S.L. Rettig: Geochemistry of Great Salt Lake, Utah, Part 1, 2, Geochim. et Cosmochim. Acta, Vol. 49, 1985, pp. 727–737, 739–774