Falun Mine
Structural evolution, geochronology, hydrothermal alteration and geometallurgical aspects of the Falun base metal sulphide and gold deposit, Bergslagen region, Sweden.
The purpose of my PhD project is to provide a thorough understanding of the genesis of the Falun Zn-Pb-Cu-(Au-Ag) deposit. In more detail, this concerns an understanding of the relationship of the ore bodies to the local structural framework, the timing and mechanism of ore formation, an evaluation of the nature and role of hydrothermal alteration and a better understanding of some detailed geometallurgical aspects. 3D modelling will be a key component in different aspects of the work. It will aid in the visualization of the deposit, thereby permitting the investigation of structures, alteration and ore volumes in 3D space.
Mapping of available drill cores will aid in visualizing the continuation of lithologies and structures at depth and, thereby, constrain the extent of the structural control on the ores. This will be crucial for the creation and testing of the 3D model. Another purpose is to take key samples for lithogeochemistry in order to characterize the nature and zonation of the hydrothermal alteration. Key rock units have been identified as targets for geochronology in order to unravel the ages of mineralization and hydrothermal alteration, but also to date the metamorphic activity in the area. The geometallurgical component of the project will deal with questions of ore characterization and the relationships between different ore types.
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