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Hydrogen isotope fractionation factors between hydrous minerals and ore fluids at low temperatures: evidence from the Granny Smith gold deposit, Western Australia

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Abstract

There are no reported experimental data on hydrogen isotope fractionation between muscovite and water at low temperatures (< 400 °C). A fractionation curve derived from extrapolation of the high temperature calibration of Suzuoki and Epstein (1976) yields 20 to 40%. higher δD values than the empirical graphical calibration of Bowers and Taylor (1985) at temperatures of about 300 °C. Data from natural hydrothermal systems formed at approximately 300 °C, where δD analyses are available both from fluid inclusions and alteration muscovite/sericite, support the Bowers and Taylor (1985) calibration, thus indicating smaller fractionation factors at these temperatures than suggested by extrapolations from high-temperature experimental results.

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Ojala, V.J., Groves, D.I. & Ridley, J.R. Hydrogen isotope fractionation factors between hydrous minerals and ore fluids at low temperatures: evidence from the Granny Smith gold deposit, Western Australia. Mineral. Deposita 30, 328–331 (1995). https://doi.org/10.1007/BF00196369

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Keywords

  • Fractionation
  • Mineral Resource
  • Fluid Inclusion
  • Gold Deposit
  • Isotope Fractionation