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A simple empirical method for high-quality electron microprobe analysis of fluorine at trace levels in Fe-bearing minerals and glasses

  • Jeffrey B. Witter EMAIL logo and Scott M. Kuehner
Published/Copyright: March 28, 2015
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American Mineralogist
From the journal American Mineralogist Volume 89 Issue 1

Abstract

We present a new, high-quality electron microprobe method for analyzing F in Fe-bearing minerals and glasses down to trace levels (<1000 ppm F). This method is empirically based and corrects for the problem of overlap of the FKα peak onto the “shoulder” of the FeLα1 peak that arises when using synthetic multi-layered diffraction crystals. It also achieves high precision and accuracy while maintaining low detection limits and a small beam diameter. Analytical conditions for F using the new method and a synthetic W/Si diffraction crystal are: 10 kV accelerating voltage, 180 nA beam current, 8 μm beam diameter, and 400 second total peak count time. An iterative beam exposure method is employed to minimize potential damage to the sample due to beam heating. The method presented here can be used to address problems related to degassing of F at active volcanoes, the reservoirs of F in the mantle, and the partitioning of F between minerals and silicate liquid.

Received: 2003-1-2
Accepted: 2003-8-5
Published Online: 2015-3-28
Published in Print: 2004-1-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Indialite in xenolithic rocks from Somma-Vesuvius volcano (Southern Italy): Crystal chemistry and petrogenetic features
  2. Coexisting chromian omphacite and diopside in tremolite schist from the Chugoku Mountains, SW Japan: The effect of Cr on the omphacite-diopside immiscibility gap
  3. 2111 biopyribole intermediate between pyroxene and amphibole: Artifact or natural product?
  4. Coexisting clinopyroxene/spinel and amphibole/spinel symplectites in metatroctolites from the Buck Creek ultramafic body, North Carolina Blue Ridge
  5. The T-X dependence of the isosymmetric displacive phase transition in synthetic Fe3+-Al zoisite: A temperature-dependent infrared spectroscopy study
  6. A kinetic study of the exsolution of pentlandite (Ni,Fe)9S8from the monosulfide solid solution (Fe,Ni)S
  7. Single-crystal plagioclase feldspar dissolution rates measured by vertical scanning interferometry
  8. A simple empirical method for high-quality electron microprobe analysis of fluorine at trace levels in Fe-bearing minerals and glasses
  9. Constraints on mingling of crystal populations from off-center zoning profiles: A statistical approach
  10. Pyribole evolution during tremolite synthesis from oxides
  11. Solution calorimetric determination of the enthalpies of formation of NH4-bearing minerals buddingtonite and tobelite
  12. Dehydration dynamics of bikitaite: Part I. In situ synchrotron powder X-ray diffraction study
  13. Dehydration dynamics of bikitaite: Part II. Ab initio molecular dynamics study
  14. Phosphate mineral associations in the Cañada pegmatite (Salamanca, Spain): Paragenetic relationships, chemical compositions, and implications for pegmatite evolution
  15. An improved equation for crystal size distribution in second-phase influenced aggregates
  16. Vibrational spectroscopy of pyrope-majorite garnets: Structural implications
  17. The modulated crystal structure of antigorite: The m = 17 polysome
  18. Structural variations in mercurian tetrahedrite
  19. A computational investigation of the Al/Fe/Mg order-disorder behavior in the dioctahedral sheet of phyllosilicates
  20. Investigation of Al/Si ordering in tetrahedral phyllosilicate sheets by Monte Carlo simulation
  21. Equations of state of ZrSiO4phases in the upper mantle
  22. High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite
  23. In situ determination of the compressibility of synthetic pure zircon (ZrSiO4) and the onset of the zircon-reidite phase transition
  24. Halite-sylvite thermoelasticity
  25. Spiral growth of grossular under hydrothermal conditions
  26. Incomplete retention of radiation damage in zircon from Sri Lanka
  27. Shirozulite, KMn32+(Si3Al)O10(OH)2, a new manganese-dominant trioctahedral mica: Description and crystal structure
  28. Novel phase transition in orthoenstatite
  29. In situ observation of the thermal decomposition of weddelite by heating stage environmental scanning electron microscopy
https://doi.org/10.2138/am-2004-0108

Articles in the same Issue

  1. Indialite in xenolithic rocks from Somma-Vesuvius volcano (Southern Italy): Crystal chemistry and petrogenetic features
  2. Coexisting chromian omphacite and diopside in tremolite schist from the Chugoku Mountains, SW Japan: The effect of Cr on the omphacite-diopside immiscibility gap
  3. 2111 biopyribole intermediate between pyroxene and amphibole: Artifact or natural product?
  4. Coexisting clinopyroxene/spinel and amphibole/spinel symplectites in metatroctolites from the Buck Creek ultramafic body, North Carolina Blue Ridge
  5. The T-X dependence of the isosymmetric displacive phase transition in synthetic Fe3+-Al zoisite: A temperature-dependent infrared spectroscopy study
  6. A kinetic study of the exsolution of pentlandite (Ni,Fe)9S8from the monosulfide solid solution (Fe,Ni)S
  7. Single-crystal plagioclase feldspar dissolution rates measured by vertical scanning interferometry
  8. A simple empirical method for high-quality electron microprobe analysis of fluorine at trace levels in Fe-bearing minerals and glasses
  9. Constraints on mingling of crystal populations from off-center zoning profiles: A statistical approach
  10. Pyribole evolution during tremolite synthesis from oxides
  11. Solution calorimetric determination of the enthalpies of formation of NH4-bearing minerals buddingtonite and tobelite
  12. Dehydration dynamics of bikitaite: Part I. In situ synchrotron powder X-ray diffraction study
  13. Dehydration dynamics of bikitaite: Part II. Ab initio molecular dynamics study
  14. Phosphate mineral associations in the Cañada pegmatite (Salamanca, Spain): Paragenetic relationships, chemical compositions, and implications for pegmatite evolution
  15. An improved equation for crystal size distribution in second-phase influenced aggregates
  16. Vibrational spectroscopy of pyrope-majorite garnets: Structural implications
  17. The modulated crystal structure of antigorite: The m = 17 polysome
  18. Structural variations in mercurian tetrahedrite
  19. A computational investigation of the Al/Fe/Mg order-disorder behavior in the dioctahedral sheet of phyllosilicates
  20. Investigation of Al/Si ordering in tetrahedral phyllosilicate sheets by Monte Carlo simulation
  21. Equations of state of ZrSiO4phases in the upper mantle
  22. High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite
  23. In situ determination of the compressibility of synthetic pure zircon (ZrSiO4) and the onset of the zircon-reidite phase transition
  24. Halite-sylvite thermoelasticity
  25. Spiral growth of grossular under hydrothermal conditions
  26. Incomplete retention of radiation damage in zircon from Sri Lanka
  27. Shirozulite, KMn32+(Si3Al)O10(OH)2, a new manganese-dominant trioctahedral mica: Description and crystal structure
  28. Novel phase transition in orthoenstatite
  29. In situ observation of the thermal decomposition of weddelite by heating stage environmental scanning electron microscopy
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