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Redetermination of the transformation enthalpies of the xanthoconite–proustite, pyrostilpnite–pyrargyrite and trechmannite–smithite phase transitions

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Abstract

 We report here refined values of the transformation enthalpy for xanthoconite to proustite (54.81 kJ/mol) and pyrostilpnite to pyrargyrite (40.32 kJ/mol). Additionally, the enthalpy for the transformation of trechmannite to smithite (5.82 kJ/mol) has been determined. The refinement was possible by taking into account a previously unknown dependence of electrochemical signals on the amount of substance undergoing the reduction process.

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  1. Institut für Chemie, Humboldt-Universität zu Berlin, Hessische Straße 1–2, D-10115 Berlin, Germany, , , , , , DE

    B. Meyer & F. Scholz

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  1. B. Meyer
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  2. F. Scholz
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Received December 21, 1995/Revised, accepted June 29, 1996

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Meyer, B., Scholz, F. Redetermination of the transformation enthalpies of the xanthoconite–proustite, pyrostilpnite–pyrargyrite and trechmannite–smithite phase transitions. Phys Chem Min 24, 50–52 (1997). https://doi.org/10.1007/s002690050016

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  • DOI: https://doi.org/10.1007/s002690050016

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