Metamorphic rocks are a common occurrence in Canada’s North and form when a rock is exposed to high temperature and/or high pressure geological processes. Exposure to such conditions is often recorded as distinct modifications to the rock’s minerals, structure and/or changes in major and trace element chemistry. Quantifying trace element and precious metal concentrations and understanding how these elements and metals move during metamorphism and deformation, is paramount to understanding ore-forming processes in Canada’s North.This project will apply innovative laboratory-based techniques to samples collected during targeted fieldwork north of Rankin Inlet (NU) to study these processes. Within this region that forms the ancient core of North America, preliminary observations and data indicate the presence a new major structure – the Raptor shear zone – which is associated with known mineralization but could have significant mineral potential west of current exploration activity. In order to study the relationship between the metamorphic rocks and fluids, and ore formation, we propose an in-depth investigation of the evolution of this structure and its spatial and genetic relationship to mineralization and rocks in the region.A team of 5 researchers will conduct sampling for two and a half weeks in July 2023. The crew will be set out by helicopter from Rankin Inlet and will conduct daily short hikes along the structure to collect fist-sized rock samples, take photos, and measurements. The research undertaken will result in the creation of detailed geological maps of the bedrock exposed across the area. We are planning on hiring one summer field assistant during fieldwork in 2023 and aim to recruit a Northern student where possible. In addition to creating maps, our research will contribute to the development of geological models for the formation of ore systems in metamorphic rocks, and more in general it will contribute to an understanding of the geological history of the region, and how it relates to other parts of Nunavut. Findings from 2023 fieldwork will be communicated back to the communities impacted (Rankin Inlet and Chesterfield Inlet).