Startseite Rates of Li diffusion in garnet: Coupled transport of Li and Y+REEs
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Rates of Li diffusion in garnet: Coupled transport of Li and Y+REEs

  • Ryan C. Cahalan EMAIL logo , Eric D. Kelly und William D. Carlson
Veröffentlicht/Copyright: 12. August 2014
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American Mineralogist
Aus der Zeitschrift American Mineralogist Band 99 Heft 8-9

Abstract

Numerical simulation of stranded diffusion profiles in partially resorbed garnet crystals from the aureole of the Makhavinekh Lake Pluton (Labrador, Canada) yields quantitative rates of intracrystalline diffusion for Li in garnet. Diffusion coefficients for Li at 700-900 °C and 0.53 GPa are 0.5-1.5 log10 units lower than those for divalent cations in the same samples, and match those for Y and Yb. This correspondence likely stems from coupled substitution of Li and Y (or REE) ions in the garnet structure: the requirement of local electroneutrality limits Li mobility to be no faster than that of Y+REEs. Because of this coupling, Li zoning in garnet is retained to comparatively high temperatures, making garnet a valuable monitor of the behavior of Li in deep crustal systems.

Keywords: Lithium; yttrium; REEs; garnet; intracrystalline diffusion; coupled substitution
Published Online: 2014-8-12
Published in Print: 2014-8-1

© 2014 by Walter de Gruyter Berlin/Boston

Artikel in diesem Heft

  1. Chemistry and Mineralogy of Earth’s Mantle. Evidence for multiple diamondite-forming events in the mantle
  2. Chemistry and Mineralogy of Earth’s Mantle. Evidence for multiple diamondite-forming events in the mantle
  3. Chemistry and Mineralogy of Earth’s Mantle. Experimental determination of melting in the systems enstatite-magnesite and magnesite-calcite from 15 to 80 GPa
  4. Chemistry and Mineralogy of Earth’s Mantle. The spin state of iron in Fe3+-bearing Mg-perovskite and its crystal chemistry at high pressure
  5. Chemistry and Mineralogy of Earth’s Mantle. Hexagonal Na0.41[Na0.125Mg0.79Al0.085]2[Al0.79Si0.21]6O12 (NAL phase): Crystal structure refinement and elasticity
  6. What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Multivariate Analysis of Raman Spectra for the Identification of Sulfates: Implications for ExoMars
  7. What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Spectral and thermal properties of perchlorate salts and implications for Mars
  8. What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Reflectance spectroscopy and optical functions for hydrated Fe-sulfates
  9. Fluids in the Crust. Redox effects on calcite-portlandite-fluid equilibria at for earc conditions: Carbon mobility, methanogenesis, and reduction melting of calcite
  10. Fluids in the Crust. Constraints on the mobilization of Zr in magmatic-hydrothermal processes in subduction zones from in situ fluid-melt partitioning experiments
  11. The Second Conference on the Lunar Highlands Crust and New Directions. The petrogenesis of impact basin melt rocks in lunar meteorite Shişr 161
  12. Amorphous Materials: Properties, structure, and durability. The nearly complete dissociation of water in glasses with strong aluminum avoidance
  13. Sepiolite-palygorskite polysomatic series: Oriented aggregation as a crystal growth mechanism in natural environments
  14. Bentonite evolution at elevated pressures and temperatures: An experimental study for generic nuclear repository designs
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  16. Characteristics of djerfisherite from fluid-rich, metasomatized alkaline intrusive environments and anhydrous enstatite chondrites and achondrites
  17. Ferroan geikielite and coupled spinel-rutile exsolution from titanohematite: Interface characterization and magnetic properties
  18. Constraints on the incorporation mechanism of chlorine in peralkaline and peraluminous Na2O-CaO-Al2O3-SiO2 glasses
  19. Interlayer structure model of tri-hydrated low-charge smectite by X-ray diffraction and Monte Carlo modeling in the Grand Canonical ensemble
  20. Tetrahedrally coordinated Co2+ in oxides and silicates: Effect of local environment on optical properties
  21. A variable-temperature neutron diffraction study of serandite: A Mn-silicate framework with a very strong, two-proton site, hydrogen bond
  22. A new biogenic, struvite-related phosphate, the ammonium-analog of hazenite, (NH4)NaMg2(PO4)2·14H2O
  23. Chromo-alumino-povondraite, NaCr3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup
  24. The occurrence of platinum-group element and gold minerals in the Bon Accord Ni-oxide body, South Africa
  25. Beshtauite, (NH4)2(UO2)(SO4)2·2H2O, a new mineral from Mount Beshtau, Northern Caucasus, Russia
  26. High-pressure phase transitions in FeCr2O4 and structure analysis of new post-spinel FeCr2O4 and Fe2Cr2O5 phases with meteoritical and petrological implications
  27. Letter. Kumdykolite from the ultrahigh-pressure granulite of the Bohemian Massif
  28. Letter. Crystal chemistry of dense hydrous magnesium silicates: The structure of phase H, MgSiH2O4, synthesized at 45 GPa and 1000 °C
  29. New Mineral Names
  30. Book Review
https://doi.org/10.2138/am.2014.4676
Schlagwörter für diesen Artikel
Lithium; yttrium; REEs; garnet; intracrystalline diffusion; coupled substitution

Artikel in diesem Heft

  1. Chemistry and Mineralogy of Earth’s Mantle. Evidence for multiple diamondite-forming events in the mantle
  2. Chemistry and Mineralogy of Earth’s Mantle. Evidence for multiple diamondite-forming events in the mantle
  3. Chemistry and Mineralogy of Earth’s Mantle. Experimental determination of melting in the systems enstatite-magnesite and magnesite-calcite from 15 to 80 GPa
  4. Chemistry and Mineralogy of Earth’s Mantle. The spin state of iron in Fe3+-bearing Mg-perovskite and its crystal chemistry at high pressure
  5. Chemistry and Mineralogy of Earth’s Mantle. Hexagonal Na0.41[Na0.125Mg0.79Al0.085]2[Al0.79Si0.21]6O12 (NAL phase): Crystal structure refinement and elasticity
  6. What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Multivariate Analysis of Raman Spectra for the Identification of Sulfates: Implications for ExoMars
  7. What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Spectral and thermal properties of perchlorate salts and implications for Mars
  8. What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Reflectance spectroscopy and optical functions for hydrated Fe-sulfates
  9. Fluids in the Crust. Redox effects on calcite-portlandite-fluid equilibria at for earc conditions: Carbon mobility, methanogenesis, and reduction melting of calcite
  10. Fluids in the Crust. Constraints on the mobilization of Zr in magmatic-hydrothermal processes in subduction zones from in situ fluid-melt partitioning experiments
  11. The Second Conference on the Lunar Highlands Crust and New Directions. The petrogenesis of impact basin melt rocks in lunar meteorite Shişr 161
  12. Amorphous Materials: Properties, structure, and durability. The nearly complete dissociation of water in glasses with strong aluminum avoidance
  13. Sepiolite-palygorskite polysomatic series: Oriented aggregation as a crystal growth mechanism in natural environments
  14. Bentonite evolution at elevated pressures and temperatures: An experimental study for generic nuclear repository designs
  15. Rates of Li diffusion in garnet: Coupled transport of Li and Y+REEs
  16. Characteristics of djerfisherite from fluid-rich, metasomatized alkaline intrusive environments and anhydrous enstatite chondrites and achondrites
  17. Ferroan geikielite and coupled spinel-rutile exsolution from titanohematite: Interface characterization and magnetic properties
  18. Constraints on the incorporation mechanism of chlorine in peralkaline and peraluminous Na2O-CaO-Al2O3-SiO2 glasses
  19. Interlayer structure model of tri-hydrated low-charge smectite by X-ray diffraction and Monte Carlo modeling in the Grand Canonical ensemble
  20. Tetrahedrally coordinated Co2+ in oxides and silicates: Effect of local environment on optical properties
  21. A variable-temperature neutron diffraction study of serandite: A Mn-silicate framework with a very strong, two-proton site, hydrogen bond
  22. A new biogenic, struvite-related phosphate, the ammonium-analog of hazenite, (NH4)NaMg2(PO4)2·14H2O
  23. Chromo-alumino-povondraite, NaCr3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup
  24. The occurrence of platinum-group element and gold minerals in the Bon Accord Ni-oxide body, South Africa
  25. Beshtauite, (NH4)2(UO2)(SO4)2·2H2O, a new mineral from Mount Beshtau, Northern Caucasus, Russia
  26. High-pressure phase transitions in FeCr2O4 and structure analysis of new post-spinel FeCr2O4 and Fe2Cr2O5 phases with meteoritical and petrological implications
  27. Letter. Kumdykolite from the ultrahigh-pressure granulite of the Bohemian Massif
  28. Letter. Crystal chemistry of dense hydrous magnesium silicates: The structure of phase H, MgSiH2O4, synthesized at 45 GPa and 1000 °C
  29. New Mineral Names
  30. Book Review
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