The effect of oxygen fugacity, melt composition, temperature and pressure on the oxidation state of cerium in silicate melts
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Berry, Andrew; Burnham, Antony D
Description
Ce LIII-edge X-ray absorption near edge structure (XANES) spectra were recorded for a series of synthetic glasses prepared over a range of oxygen fugacities (fO2s, from -10 to +11 in logarithmic units relative to the quartz-fayalite-magnetite, QFM, buffer), temperatures (1300-1500°C), and pressures (1atm and 1GPa). The oxidation state ratio of Ce, Ce4+/∑Ce (where ∑Ce=Ce3++Ce4+), was determined from the spectra allowing the relationships between Ce4+/∑Ce and fO2, temperature, pressure and melt...[Show more]
Collections | ANU Research Publications |
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Date published: | 2014 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/57286 |
Source: | Chemical Geology |
DOI: | 10.1016/j.chemgeo.2013.12.015 |
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