Impact of metamorphism and deformation on metal mobility at the microscale to nanoscale in orogenic gold systems

变质作用和变形影响了热液矿物系统中金属(如Au、Bi、Te)的活动性，其中造山金系统是加拿大作为Au生产商的主要贡献者。变形和变质作用的影响在区域和矿床规模上受到很好的限制，但在微观到纳米尺度上，特别是在硫化物和石英中，人们对此知之甚少。拟议的研究计划调查了马尼托巴省和安大略省乌奇亚省内造山金矿系统中的金属流动性如何受到不同程度的变质和变形的影响。具体地说，研究了黄铁矿和石英中微结构在金属(Au、Bi、Te)迁移性和金属丰度在颗粒尺度上的变化方面的作用。该计划将提供培训十名高素质人员的机会，让他们接触到各种实地工作方法，包括使用手持仪器与尖端微米和纳米技术相结合来约束研究问题。这项培训将为HQP在自然科学领域非常抢手的职位做准备，包括经济地质学、几何学、材料科学、工程学和/或地球化学分析。我的项目的结果将影响我们理解变质作用和变形在黄铁矿和石英中关于金属流动性的作用；在不同变质条件下变质和变形过程中导致金属流动性的过程；以及金属在变形和变质过程中如何在微观和纳米尺度上传输。这加深了我们对变质变形造山金系统中金属在颗粒尺度上活动性的认识，所采用的方法也可应用于国内外其他变质变形矿物系统。此外，由于获得了金属在变形硫化物和石英中聚集的位置和方式的知识，这些结果将提高金属回收率，从而影响冶金过程。最后，该研究计划将在微结构、微结构以及应用于地质过程的地球化学微观和纳米分析的综合领域取得有意义的进展，目前该领域在加拿大的调查中未得到充分代表。

Metamorphism and deformation impact the mobility of metals (e.g., Au, Bi, Te) in hydrothermal mineral systems including orogenic gold systems which are a major contributor to Canada's leading role as Au producer. The impact of deformation and metamorphism is well constrained on the district and deposit scale but poorly understood on the microscale to nanoscale specifically within sulfides and quartz. The proposed research program investigates how metal mobility in orogenic gold systems within the Uchi Subprovince of Manitoba and Ontario is impacted by varying degrees of metamorphism and deformation. Specifically, the role of microstructures in pyrite and quartz is investigated regarding metal (Au, Bi, Te) mobility and variations in metal abundance on the grain scale. The program will provide opportunities to train ten highly qualified personnel by exposing them to a variety of fieldwork methods including the use of handheld instrumentation in combination with cutting-edge micro- and nano-technologies to constrain the research questions. This training will prepare HQP for highly sought-after roles in the natural sciences including economic geology, geometallurgy, material sciences, engineering and/or geochemical analyses. The results of my program will impact our understanding what role metamorphism and deformation play in pyrite and quartz regarding metal mobility; what processes cause metal mobility during metamorphism and deformation at different metamorphic conditions; and how metals are transported during deformation and metamorphism on the microscale and nanoscale. This advances our knowledge of metal mobility on the grain scale in metamorphosed and deformed orogenic gold systems and the used methods can be applied to other metamorphosed and deformed mineral systems domestically and globally. Additionally, the results will improve metal recovery rates and hence impact metallurgical processes since knowledge is gained where and how metals accumulate in deformed sulfides and quartz. Finally, the research program will make meaningful advancements on the combined field of microtexture, microstructure, and geochemical micro- and nano-analyses applied to geological processes, which is currently under-represented in its investigation within Canada.