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Department of Geology and Geological Engineering Van Tuyl Lecture Series- Fall 2014

Department of Geology and Geological Engineering Van Tuyl Lecture Series- Fall 2014 4:00-5:00 p.m. in Berthoud Hall Room 241 Thursday , November 6, 2014 Dr . Nicole C. Hurtig McGill University, Montreal “ Metal Transport in Hydrothermal Fluids: Application to Ore Forming Systems ”

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Department of Geology and Geological Engineering Van Tuyl Lecture Series- Fall 2014

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  1. Department of Geology and Geological Engineering Van Tuyl Lecture Series- Fall 2014 4:00-5:00 p.m. in Berthoud Hall Room 241 Thursday, November 6, 2014 Dr. Nicole C. Hurtig McGill University, Montreal “Metal Transport in Hydrothermal Fluids: Application to Ore Forming Systems” Abstract: The transport of metals in hydrothermal fluids is controlled by temperature, pressure, and fluid chemistry. The formation of hydrothermal ore deposits occurs along a chemical gradient reflected in significant changes in fluid chemistry, mineral precipitation and dissolution caused by processes such as fluid mixing, fluid-rock interaction, cooling and decompression. Understanding the physico-chemical controls on metal solubility is essential in determining ore forming triggers and predicting metal mobility in hydrothermal fluids. Along a chemical gradient different aqueous metallic species behave distinctively. Therefore, the study of metal ratios in fluids and minerals of natural system is crucial in determining the controls of hydrothermal ore forming processes. The combination of fluid systematics of active geothermal systems with experimental geochemistry, geochemical modelling and observations from mineralized systems presents a powerful tool for understanding and predicting ore formation.

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