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Copper speciation in vapor-phase fluid inclusions from the Mole Granite, Australia

  • John A. Mavrogenes EMAIL logo , Andrew J. Berry , Matthew Newville and Stephen R. Sutton
Published/Copyright: March 28, 2015
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American Mineralogist
From the journal American Mineralogist Volume 87 Issue 10

Abstract

X-ray fluorescence elemental maps and Cu K-edge X-ray absorption near-edge structure (XANES) spectra were recorded for individual vapor and brine phase fluid inclusions from the Mole Granite, NSW, Australia. The maps indicate that Cu is concentrated in the vapor inclusions and, at room temperature, distributed uniformly in the condensed liquid. Opaque precipitates in these inclusions do not contain Cu. The absorption spectra identify the stable complexes as [Cu(H2O)6]2+ at 25 °C, [CuCl2]1- at 200 °C, and either [CuCl2]1- or [CuCl(H2O)] at the homogenization temperature of around 400 °C. These changes in Cu coordination and oxidation state are fully reversible. We suggest that the vapor phase partitioning of Cu as a chloride complex from a high-density brine may occur under acidic conditions. Estmates of fluid acidity at the time of boiling may potentially predict the metal distribution between epithermal and porphyry-type environments in hydrothermal systems.

Received: 2002-1-15
Accepted: 2002-6-13
Published Online: 2015-3-28
Published in Print: 2002-10-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Atomic-scale observations of franckeite surface morphology
  2. Surface control vs. diffusion control during calcite dissolution: Dependence of step-edge velocity upon solution pH
  3. First-principles calculation of the infrared spectrum of lizardite
  4. Hard-mode infrared spectroscopy of perovskites across the CaTiO3-SrTiO3 solid solution
  5. Spectroscopic studies of spessartine from Brazilian pegmatites
  6. Order/disorder in natrolite group zeolites: A 29Si and 27Al MAS NMR study
  7. Evolution of local electronic structure in alabandite and niningerite solid solutions [(Mn,Fe)S, (Mg,Mn)S, (Mg,Fe)S] using sulfur K- and L-edge XANES spectroscopy
  8. Electron paramagnetic resonance spectroscopic study of synthetic fluorapatite: Part III. Structural characterization of sub-ppm-level Gd and Mn in minerals at W-band frequency
  9. Experimental determination of the equilibria: rutile + magnesite = geikielite + CO2 and zircon + 2 magnesite = baddeleyite + forsterite + 2 CO2
  10. Symplectites derived from metastable phases in martian basaltic meteorites
  11. Copper speciation in vapor-phase fluid inclusions from the Mole Granite, Australia
  12. Trace-element partitioning between vacancy-rich eclogitic clinopyroxene and silicate melt
  13. Fluorite particles inducing butterfly aggregates of incipient microperthite in alkali feldspar from a syenite, the Patagonian Andes, southern Chile
  14. Thermal stability and spectroscopic studies of zemkorite: A carbonate from the Venkatampalle kimberlite of southern India
  15. Temperatures from triple-junction angles in sulfides
  16. Experimental determination of calcite solubility in H2O-NaCl solutions at deep crust/ upper mantle pressures and temperatures: Implications for metasomatic processes in shear zones
  17. Compressibility of stottite, FeGe(OH)6: An octahedral framework with protonated O atoms
  18. High-pressure behavior of bikitaite: An integrated theoretical and experimental approach
  19. Raman spectroscopic study of H2O in bikitaite: “One-dimensional ice”
  20. Hydrogen, lithium, and boron in mantle-derived olivine: The role of coupled substitutions
  21. Crystal chemistry of three tourmalines by SREF, EMPA, and SIMS
  22. Revised structure models for antigorite: An HRTEM study
  23. The structure of Mn-rich tuperssuatsiaite: A palygorskite-related mineral
  24. Single-crystal structure refinements and crystal chemistry of synthetic trioctahedral micas KM3(Al3+,Si4+)4O10(OH)2, where M = Ni2+, Mg2+, Co2+, Fe2+, or Al3+
  25. SIMS matrix effects in the analysis of light elements in silicate minerals: Comparison with SREF and EMPA data
  26. Letters. Equation of state of Al-bearing stishovite to 40 GPa at 300 K
  27. Order parameter behavior at the structural phase transition in cummingtonite from Mössbauer spectroscopy
  28. Deciphering Ni sequestration in soil ferromanganese nodules by combining X-ray fluorescence, absorption, and diffraction at micrometer scales of resolution
  29. Use of the spindle stage for orientation of single crystals for microXAS: Isotropy and anisotropy in Fe-XANES spectra
  30. A technique for mounting and polishing melt inclusions in small (<1 mm) crystals
https://doi.org/10.2138/am-2002-1011

Articles in the same Issue

  1. Atomic-scale observations of franckeite surface morphology
  2. Surface control vs. diffusion control during calcite dissolution: Dependence of step-edge velocity upon solution pH
  3. First-principles calculation of the infrared spectrum of lizardite
  4. Hard-mode infrared spectroscopy of perovskites across the CaTiO3-SrTiO3 solid solution
  5. Spectroscopic studies of spessartine from Brazilian pegmatites
  6. Order/disorder in natrolite group zeolites: A 29Si and 27Al MAS NMR study
  7. Evolution of local electronic structure in alabandite and niningerite solid solutions [(Mn,Fe)S, (Mg,Mn)S, (Mg,Fe)S] using sulfur K- and L-edge XANES spectroscopy
  8. Electron paramagnetic resonance spectroscopic study of synthetic fluorapatite: Part III. Structural characterization of sub-ppm-level Gd and Mn in minerals at W-band frequency
  9. Experimental determination of the equilibria: rutile + magnesite = geikielite + CO2 and zircon + 2 magnesite = baddeleyite + forsterite + 2 CO2
  10. Symplectites derived from metastable phases in martian basaltic meteorites
  11. Copper speciation in vapor-phase fluid inclusions from the Mole Granite, Australia
  12. Trace-element partitioning between vacancy-rich eclogitic clinopyroxene and silicate melt
  13. Fluorite particles inducing butterfly aggregates of incipient microperthite in alkali feldspar from a syenite, the Patagonian Andes, southern Chile
  14. Thermal stability and spectroscopic studies of zemkorite: A carbonate from the Venkatampalle kimberlite of southern India
  15. Temperatures from triple-junction angles in sulfides
  16. Experimental determination of calcite solubility in H2O-NaCl solutions at deep crust/ upper mantle pressures and temperatures: Implications for metasomatic processes in shear zones
  17. Compressibility of stottite, FeGe(OH)6: An octahedral framework with protonated O atoms
  18. High-pressure behavior of bikitaite: An integrated theoretical and experimental approach
  19. Raman spectroscopic study of H2O in bikitaite: “One-dimensional ice”
  20. Hydrogen, lithium, and boron in mantle-derived olivine: The role of coupled substitutions
  21. Crystal chemistry of three tourmalines by SREF, EMPA, and SIMS
  22. Revised structure models for antigorite: An HRTEM study
  23. The structure of Mn-rich tuperssuatsiaite: A palygorskite-related mineral
  24. Single-crystal structure refinements and crystal chemistry of synthetic trioctahedral micas KM3(Al3+,Si4+)4O10(OH)2, where M = Ni2+, Mg2+, Co2+, Fe2+, or Al3+
  25. SIMS matrix effects in the analysis of light elements in silicate minerals: Comparison with SREF and EMPA data
  26. Letters. Equation of state of Al-bearing stishovite to 40 GPa at 300 K
  27. Order parameter behavior at the structural phase transition in cummingtonite from Mössbauer spectroscopy
  28. Deciphering Ni sequestration in soil ferromanganese nodules by combining X-ray fluorescence, absorption, and diffraction at micrometer scales of resolution
  29. Use of the spindle stage for orientation of single crystals for microXAS: Isotropy and anisotropy in Fe-XANES spectra
  30. A technique for mounting and polishing melt inclusions in small (<1 mm) crystals
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