Water solubility in albite-orthoclase join and JR-1 rhyolite melts at 1000C and 500 to 2000 bars, determined by micro-analysis with SIMS

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Abstract

Water solubilities in albite (Ab)-orthoclase (Or) join and JR-1 rhyolite melts at 1000°C and up to 2000 bars were determined by the “excess of water” method using an internally heated pressure vessel (IHPV) with rapid quenching and a secondary ion microprobe mass spectrometer (SIMS). We have found that secondary hydration of run product glass with coexisting aqueous fluid occurs during quenching. The hydration is significant in sodium-rich glass. The bulk analysis of such secondary hydrated run-products will cause overestimation of the water solubility, while the true water solubility can be obtained by micro-analysis on non-attacked portion of the glass. The apparent compositional dependence in the published water solubility data could be due to the secondary hydration of run product glass. Newly determined water solubility for the Ab-Or join and rhyolite melts is expressed as H<sub>2</sub>O (mol%) = 0.19 √<i>P</i><sub>H2O</sub> (bar), at 1000°C.

Journal

  • GEOCHEMICAL JOURNAL

    GEOCHEMICAL JOURNAL 31(1), 57-61, 1997-02-01

    GEOCHEMICAL SOCIETY OF JAPAN

References:  18

Cited by:  4

Codes

  • NII Article ID (NAID)
    10008802336
  • NII NACSIS-CAT ID (NCID)
    AA00654975
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00167002
  • NDL Article ID
    4153855
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z53-R488
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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