ケイ酸塩メルトに対する希ガス溶解度の研究  [in Japanese] Studies of noble gas solubility in silicate melts  [in Japanese]

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Abstract

Noble gas solubility in liquid is dependent on both interaction energy between solute and solvent and molar volume of noble gas in solvent. The molar volume is more effective on the solubility in silicate melt than the interaction energy. Although ionic porosity (IP) had been considered to control noble gas solubilities, this parameter cannot apply to the solubilities in silicate melts with low IP. We found that noble gas solubilities in silicate melt are correlated with the NBO/Si (non-bridging oxygens per silicon) ratio in wide range of silicate melt composition, independently of nature of network modifying cations. However, solubility data for aluminosilicate melt falls off the correlation line. Although Al<sup>3+</sup> is in tetrahedral coordination in aluminosilicate melts with sufficient M<sup>+</sup> and M<sup>2+</sup> cations for charge-balance, the solubility data can fall on the correlation line if we treat oxygens bonding with MAl<sup>4+</sup> or M<sub>0.5</sub>Al<sup>4+</sup> as non-bridging oxygen. This means that the solution of noble gas in silicate melt is mainly dependent on the network of SiO<sub>4</sub>.

Journal

  • Chikyukagaku

    Chikyukagaku 38(2), 85-93, 2004

    The Geochemical Society of Japan

References:  26

Codes

  • NII Article ID (NAID)
    110008680070
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    0386-4073
  • NDL Article ID
    6988186
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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