A low-pressure-high-temperature technique for the piston-cylinder

A method for conducting successful low pressure (0.3-0.5 GPa) and high temperature (900-1200°C) experiments in the 19 mm piston-cylinder is presented. The technique is capable of running high fluid/melt experiments with minimum hydrogen loss, attaining precise, reproducible pressures (±10%), and has...

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Bibliographic Details
Published inThe American mineralogist Vol. 93; no. 1; pp. 48 - 52
Main Authors Moore, Gordon, Roggensack, Kurt, Klonowski, Stan
Format Journal Article
LanguageEnglish
Published Washington Mineralogical Society of America 01.01.2008
De Gruyter
Walter de Gruyter GmbH
Subjects
Calibration
Carbon dioxide
Degassing
experiment
experimental studies
fluid
Geochemistry
H2O
High temperature
hydrogen
instruments
iron
low pressure
melts
metals
Minerals
Piston-cylinder
Pressure
silicate melts
solubility
techniques
temperature
Temperature effects
volatile
volatiles
water vapor
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Summary:A method for conducting successful low pressure (0.3-0.5 GPa) and high temperature (900-1200°C) experiments in the 19 mm piston-cylinder is presented. The technique is capable of running high fluid/melt experiments with minimum hydrogen loss, attaining precise, reproducible pressures (±10%), and has fast initial quench rates (>150°C/s). These abilities are invaluable when conducting low pressure, fluid-saturated experiments such as phase equilibria, volatile solubility, and dynamic degassing experiments that are relevant to sub-volcanic magma chamber processes. A double capsule construction is also described that uses a solid oxygen buffer, and minimizes both contamination of the sample by carbon and the loss of iron in the melt to the capsule walls.
ISSN:0003-004X
1945-3027
DOI:10.2138/am.2008.2618