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Alluvial gold placers from Klínec area - morphology and nature of gold
Fox, Simon ; Zachariáš, Jiří (advisor) ; Štědrá, Veronika (referee)
The search for economically viable gold deposits remains a significant pursuit requiring skilled expertise. The first part of the thesis establishes essential concepts related to gold ore deposits and placer gold, including its elemental properties, genesis in an orogenic environment, transportation by natural forces, and deposition in a fluvial setting. The study particularly focuses on the Klínec area in Central Bohemia and offers an insight into the geological region characterized by a Neoproterozoic basement uplifted during the late Miocene due to tectonic movements that played an integral role in the placer gold deposition. The historical context of gold mining in this Bohemian region is also presented. The practical segment of this thesis aims to establish connections between statistical and observational methods and the relationship between placer gold and its orogenic gold deposit. The methodology involves fieldwork for collecting gold particles which were then subjected to optical observation and microscopic photography. Morphological features, particularly sphericity and roundness, are analysed to identify trends indicating proximity to the primary gold source. The findings reveal that gold particles closer to the primary source exhibit sharper angularity, larger grain size, and greater...
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