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Graphical Comparison of Mineral Gibbs Free Energy Data

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dGcomparison.pdf (758.8Kb)
Date
2017
Author
Woitke, Peter
Helling, Christiane
Turner, George
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Abstract
The following pages show plots of the Gibbs-free energy of formation ΔGӨf [kJ/mol] from free atoms as function of temperature T [K] of 121 solid minerals from the SUPCRTBL database (Zimmer et al., 2016). These thermo-chemical data are compared to other data sources in a second plot if available. The other data sources include (Sharp & Huebner, 1990, indicated by SH90) and fits done by the authors to the NIST-Janaf data (Chase, 1986, indicated by GGchem). The comparison plot shows differences to the mean data as indicated. The SUPCRTBL data points have been generated for temperatures 100 K to 2500 K according to the equations and parameters given in Zimmer et al.
Citation
Woitke , P , Helling , C & Turner , G 2017 , Graphical Comparison of Mineral Gibbs Free Energy Data . University of St Andrews . https://doi.org/10.17630/3ba9b432-3564-4e6c-b350-687eb4b501a5
DOI
https://doi.org/10.17630/3ba9b432-3564-4e6c-b350-687eb4b501a5
Type
Other
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/12243

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