THE FUSION CURVE OF ALBITE REVISITED AND THE COMPRESSIBILITY OF NAALSI3O8 LIQUID WITH PRESSURE
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dc.contributor.author | Lange R.A. | |
dc.date.accessioned | 2022-01-02T07:44:06Z | |
dc.date.available | 2022-01-02T07:44:06Z | |
dc.date.issued | 2003 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=7600095 | |
dc.identifier.citation | American Mineralogist, 2003, 88, 1, 109 | |
dc.identifier.issn | 0003-004X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/34100 | |
dc.description.abstract | The I bar, thermodynamic properties of crystalline and liquid NaAlSi308 are used to calculate the fusion curve of albite to 10 kbar. The calculated temperatures (± 2sigma) of the melting reaction are 1152 (± 7) degrees C at 3 kbar and 1247 (± 24) degrees Cat 10 kbar. The location of the calculated fusion curve to 10 kbar is in excellent agreement with phase-equilibrium constraints on the maximum and minimum temperatures of the fusion curve at 3 and 15 kbar, respectively. Calculation of the melting reaction at pressures >10 kbar requires that the pressure dependence of the liquid compressibility (K0 = dKT,O/ dP, where KT,O = 1BetaT,0) be known. On the basis of five half-reversal, crystallization experiments in the literature, which collectively provide minimum temperatures of the fusion curve between 12 and 32 kbar, KO (derived from the Birch-Murnaghan relation) is constrained to be greater or more than 10 for liquid NaAlSi308A comparison with other silicate liquids shows that there is a strong, positive correlation between the compressibility at one bar (BetaT,O) and K0. In addition, data on the water-saturated fusion curve of albite are used to quantify the effect of small amounts of H20 (less than or equal to 1 wt%) on lowering the melting temperature of albite (less than or equal to 68 degrees). | |
dc.subject | MINERALOGY | |
dc.subject | PRESSURE | |
dc.title | THE FUSION CURVE OF ALBITE REVISITED AND THE COMPRESSIBILITY OF NAALSI3O8 LIQUID WITH PRESSURE | |
dc.type | Статья |
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