Startseite Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part I: Systematics of trace-element partitioning
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Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part I: Systematics of trace-element partitioning

  • John Charles White EMAIL logo , Greg S. Holt , Don F. Parker und Minghua Ren
Veröffentlicht/Copyright: 31. März 2015
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American Mineralogist
Aus der Zeitschrift American Mineralogist Band 88 Heft 2-3

Abstract

New alkali feldspar/felsic magma trace-element partition coefficients (D-values) for Rb, Sr, Ba, Eu, Y, Zr, Nb, Ga, Zn, trivalent REE, Be, Cs, Hf, Pb, Th, and U for 30 samples of peralkalic quartz trachyte and rhyolite are presented. D-values of incompatible elements vary systematically with melt polymerization parameters, increasing with whole-rock silica, but decreasing in rocks with higher agpaitic indices [A.I. = mol (Na + K)/Al]. D-values for Sr and Ba (evaluated to be accurate) vary systematically with crystal chemistry, probably substituting for Na in the Ca-poor alkali feldspar phases. Apparent D-values for Sr and Ba from pre-Quaternary systems are fraught with contamination and analytical errors, respectively, and should be used with caution. DEu decreases exponentially with A.I., ranging from compatible in weakly peralkalic (A.I. < 1.1) rocks to strongly incompatible in very peralkalic (A.I. > 1.2) rocks. These regular variations strongly suggest that partition coefficients for these elements may be predicted accurately if whole-rock and crystalchemical parameters are known.

Received: 2002-3-11
Accepted: 2002-10-18
Published Online: 2015-3-31
Published in Print: 2003-2-1

© 2015 by Walter de Gruyter Berlin/Boston

Artikel in diesem Heft

  1. Structure, metal-insulator transitions, and magnetic properties of FeO at high pressures
  2. The high-temperature behavior of defect hydrogen species in quartz: Implications for hydrogen isotope studies
  3. Thermal stability and vibrational spectra of the sheet borate tuzlaite, NaCa[B5O8(OH)2]·3H2O
  4. Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration
  5. In-situ determination of mineral solubilities in fluids using a hydrothermal diamond-anvil cell and SR-XRF: Solubility of AgCl in water
  6. Pressure-induced phase transition in malayaite, CaSnOSiO4
  7. Equation of state of stishovite to lower mantle pressures
  8. Chemical transfer during redox exchanges between H2 and Fe-bearing silicate melts
  9. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part I: Systematics of trace-element partitioning
  10. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part II: Empirical equations for calculating trace-element partition coefficients of large-ion lithophile, high field-strength, and rare-earth elements
  11. Four generations of accessory-phase growth in low-pressure migmatites from SW New Hampshire
  12. Mineralogy, chemistry, and formation of oxidized biotite in the weathering profile of granitic rocks
  13. Experimental study of zircon coarsening in quartzite ±H2O at 1.0 GPa and 1000 ℃, with implications for geochronological studies of high-grade metamorphism
  14. Biotite dissolution processes and mechanisms in the laboratory and in nature: Early stage weathering environment and vermiculitization
  15. Fe2+ -Mg partitioning between garnet, magnesiowüstite, and (Mg,Fe)2SiO4 phases of the transition zone
  16. Interlayer structure and dynamics of Cl-bearing hydrotalcite: far infrared spectroscopy and molecular dynamics modeling
  17. Si-Al disorder and solid solutions in analcime, chabazite, and wairakite
  18. Cafetite, Ca[Ti2O5](H2O): Crystal structure and revision of chemical formula
  19. Order-disorder approach to calcioaravaipaite, [PbCa2Al(F,OH)9]: The crystal structure of the triclinic MDO polytype
  20. Ab initio investigation of the structures of NaOH hydrates and their Na+ and OH– coordination polyhedra
  21. Another step toward understanding the true nature of sartorite: Determination and refinement of a ninefold superstructure
  22. Letter. Ultrapotassic clinopyroxene from the Kumdy-Kol microdiamond mine, Kokchetav Complex, Kazakhstan: Occurrence, composition and crystal-chemical characterization
  23. Letter. Determination of planetary basalt parentage: A simple technique using the electron microprobe
https://doi.org/10.2138/am-2003-2-309

Artikel in diesem Heft

  1. Structure, metal-insulator transitions, and magnetic properties of FeO at high pressures
  2. The high-temperature behavior of defect hydrogen species in quartz: Implications for hydrogen isotope studies
  3. Thermal stability and vibrational spectra of the sheet borate tuzlaite, NaCa[B5O8(OH)2]·3H2O
  4. Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration
  5. In-situ determination of mineral solubilities in fluids using a hydrothermal diamond-anvil cell and SR-XRF: Solubility of AgCl in water
  6. Pressure-induced phase transition in malayaite, CaSnOSiO4
  7. Equation of state of stishovite to lower mantle pressures
  8. Chemical transfer during redox exchanges between H2 and Fe-bearing silicate melts
  9. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part I: Systematics of trace-element partitioning
  10. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part II: Empirical equations for calculating trace-element partition coefficients of large-ion lithophile, high field-strength, and rare-earth elements
  11. Four generations of accessory-phase growth in low-pressure migmatites from SW New Hampshire
  12. Mineralogy, chemistry, and formation of oxidized biotite in the weathering profile of granitic rocks
  13. Experimental study of zircon coarsening in quartzite ±H2O at 1.0 GPa and 1000 ℃, with implications for geochronological studies of high-grade metamorphism
  14. Biotite dissolution processes and mechanisms in the laboratory and in nature: Early stage weathering environment and vermiculitization
  15. Fe2+ -Mg partitioning between garnet, magnesiowüstite, and (Mg,Fe)2SiO4 phases of the transition zone
  16. Interlayer structure and dynamics of Cl-bearing hydrotalcite: far infrared spectroscopy and molecular dynamics modeling
  17. Si-Al disorder and solid solutions in analcime, chabazite, and wairakite
  18. Cafetite, Ca[Ti2O5](H2O): Crystal structure and revision of chemical formula
  19. Order-disorder approach to calcioaravaipaite, [PbCa2Al(F,OH)9]: The crystal structure of the triclinic MDO polytype
  20. Ab initio investigation of the structures of NaOH hydrates and their Na+ and OH– coordination polyhedra
  21. Another step toward understanding the true nature of sartorite: Determination and refinement of a ninefold superstructure
  22. Letter. Ultrapotassic clinopyroxene from the Kumdy-Kol microdiamond mine, Kokchetav Complex, Kazakhstan: Occurrence, composition and crystal-chemical characterization
  23. Letter. Determination of planetary basalt parentage: A simple technique using the electron microprobe
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