Geological controls on critical raw materials in base metal sulfide deposits

This post-doctoral project investigates the geological controls on the incorporation and redistribution of Ga, Ge, In, Sb, Bi and Co in Zn- and Cu-bearing deposits of Sweden, with emphasis on sphalerite- and chalcopyrite-hosted mineralization in VMS and vein/breccia systems.

Previous projects have demonstrated strong variability in trace-element distribution and highlighted the importance of metamorphism, deformation, and fluid-driven remobilization. Building on these results, this post-doc will develop predictive mineral-systems models that integrate deposit-scale geology with micro- and nano-scale characterization (EPMA, LA-ICP-MS, EBSD, APT, synchrotron, metal isotopes, fluid inclusions). A database of sphalerite, galena and sulfosalts analytical data in Sweden will be assembled and subjected to a meta-analysis using advanced statistical methods (e.g. Linear Mixed Effects modelling, distribution and variance tests), aiming at elucidating regional zonation patterns.

The project will couple this knowledge to geometallurgical models, linking CRM mineralogy and textures to beneficiation performance and by-product recovery. A novel aspect is to extend geometallurgical modelling beyond processing optimization to also inform environmental management. This includes predicting CRM losses to tailings, assessing their environmental stability and mobility, and evaluating the potential for reprocessing of tailings as a secondary resource. In this way, the project addresses both resource efficiency and long-term waste management strategies.