Thermodynamics and crystal chemistry of copper arsenates

• Applicant: Professor Juraj Majzlan, Ph.D.
• Subject Area: Mineralogy, Petrology and Geochemistry
• Term: from 2016 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 319264552

• Final Report Year: 2019

Final Report Abstract

The project „Thermodynamics and crystal chemistry of copper arsenates“ included the determination of thermodynamic properties and crystal structures of several end member copper arsenates as well as of solid solutions of such minerals. The thermodynamic data will be presented in publications and made available for databases of thermodynamic software such as PHREEQC or Geochemist’s Workbench. Additionally, we analyzed isotopic fractionation between malachite and aqueous solution for a better insight into the formation of secondary minerals. All together, we enhanced our understanding of the processes that form secondary minerals in ore deposits with this project.

Publications

• (2018): Thermodynamic properties, crystal structure and phase relations of pushcharovskite [Cu(AsO3OH)(H2O)·0.5H2O], geminite [Cu(AsO3OH)(H2O)] and liroconite [Cu2Al(AsO4)(OH)4·4H2O]. 17. Sanierungskolloquium, Jena, Germany
  Plumhoff, A.M., Dachs, E., Benisek, A., Majzlan, J.
  (See online at https://doi.org/10.5194/ejm-32-285-2020)
• (2018): Thermodynamic properties, crystal structure and phase relations of pushcharovskite [Cu(AsO3OH)(H2O)·0.5H2O], geminite [Cu(AsO3OH)(H2O)] and liroconite [Cu2Al(AsO4)(OH)4·4H2O]. 22nd General Meeting of the International Mineralogical Association, Melbourne, Australia
  Plumhoff, A.M., Dachs, E., Benisek, A., Majzlan, J.
  (See online at https://doi.org/10.5194/ejm-32-285-2020)
• (2019): Fractionation of copper, oxygen and hydrogen isotopes between malachite and aqueous phase. 9th European Conference on Mineralogy and Spectroscopy, Prague, Czech Republic
  Plumhoff, A.M., Marthur, R., Milovsky, R., Majzlan, J.
  (See online at https://doi.org/10.1016/j.gca.2021.02.009)