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Oxygen fugacity control in piston-cylinder experiments
Contributions to Mineralogy and Petrology, 2012The main goal of this study was to develop and test a capsule assembly for use in piston-cylinder experiments where oxygen fugacity could be controlled in the vicinity of the QFM buffer without H2O loss or carbon contamination of the sample material. The assembly consists of an outer Pt-capsule containing a solid buffer (Ni–NiO or Co–CoO) plus H2O and ...
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Journal of Geophysical Research, 1973
Water fugacity and oxygen fugacity can be controlled concomitantly in solid-media high-pressure apparatus by using CO2-H2O vapors and the double-capsule technique with oxygen buffers. Calculations based on an ideal-solution model yield values of the fugacities of O2, H2, and H2O in the samples.
A. L. Boettcher +2 more
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Water fugacity and oxygen fugacity can be controlled concomitantly in solid-media high-pressure apparatus by using CO2-H2O vapors and the double-capsule technique with oxygen buffers. Calculations based on an ideal-solution model yield values of the fugacities of O2, H2, and H2O in the samples.
A. L. Boettcher +2 more
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The oxidation state of europium as an indicator of oxygen fugacity
Geochimica et Cosmochimica Acta, 1975Empirical oxygen barometers based on Eu(2+)/Eu(3+) ratios in plagioclase feldspar and magmatic liquid were developed using Philpott's (1970) approach and the experimental data of Drake (1972). Oxygen fugacities calculated on the basis of Eu(2+)/Eu(3+) ratios for terrestrial basalts cluster tightly around 10 to the negative seventh power.
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Oxygen buffering of Kilauea volcanic gases and the oxygen fugacity of Kilauea basalt
Geochimica et Cosmochimica Acta, 1993Volcanic gases collected during episode 1 of the Puu Oo eruption along the east rift zone of Kilauea Volcano, Hawaii, have uniform C-O-H-S-Cl-F compositions that are sharply depleted in CO2. The CO2-poor gases are typical of Type II volcanic gases (gerlach and Graeber, 1985) and were emitted from evolved magma stored for a prolonged period of time in ...
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The effects of oxygen fugacity on mineral stabilities in kimberlite
Goldschmidt2022 abstracts, 2022Zairong Liu +3 more
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1971
Recent advances in the theory and technology of solid electrolyte sensors have opened up a very promising field of direct monitoring of thermodynamic behavior of a chemical system which involves a non-condensed phase directly or indirectly. At present only oxygen and sulfur sensors are practical to use, but it is very likely that sensors for other ...
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Recent advances in the theory and technology of solid electrolyte sensors have opened up a very promising field of direct monitoring of thermodynamic behavior of a chemical system which involves a non-condensed phase directly or indirectly. At present only oxygen and sulfur sensors are practical to use, but it is very likely that sensors for other ...
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Uniform Oxygen Fugacity of Shergottite Mantle Sources and an Oxidized Martian Lithosphere
Earth and Planetary Science Letters, 2021Kimberly T. Tait +2 more
exaly
Oxygen Fugacity of Yanshanian Granites in South China and Implications for Metallogeny
Ore Geology Reviews, 2017Xingyuan Li +2 more
exaly