Petrology and geochemistry of intrusive rocks at the Lac des Iles palladium mine, NW Ontario

安大略省西北部 Lac des Iles 钯矿侵入岩的岩石学和地球化学

• 批准号: 538900-2019
• 负责人: Hollings, Peter
• 金额: $ 2.02万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699208
• 关键词: Petrology; geochemistry; intrusive; rocks; Lac

This project will investigate two aspects of the Lac des Iles (LDI) palladium mine in Northern Ontario. The first study will investigate the genesis of intrusive bodies in the vicinity of the mine in order to identify dikes associated with mineralization and provide insights into the tectonic setting in which the deposit formed. The second study will investigate the mechanisms that caused the rapid textural changes and metal enrichments along the contact of the geological domains within the Offset Zone of the South LDI complex. This will test possible models to explain the textural changes including a new magma influx, mechanical separation of primocrysts or filter pressing, as well as providing insights into the source and parental magma compositions of geological domains. We will utilize a combination of detailed mapping and logging, whole rock geochemistry, petrography, geochronology, mineral chemistry and radiogenic isotopes to thoroughly investigate the two distinct but associated goals of this project. By so doing we will train young researchers in the key skills necessary for a successful career in the geosciences whether in academia, government or industry. Recent work has suggested that the LDI mine may have formed in an orogenic setting, unlike the majority of Ni-Cu-PGE systems which are generally accepted to have formed in association with Large Igneous Provinces. The data generated in this study will be used to test these models for LDI and provide insights into the tectonic setting, developing models for new deposits that can be applied by North American Palladium and other Canadian exploration companies. The discovery and development of new mineral resources is critical to the well-being of Canada's economy and this project will lead to greater efficiencies in that process.

该项目将调查安大略省北部 Lac des Iles (LDI) 钯矿的两个方面。第一项研究将调查矿井附近侵入体的成因，以确定与矿化相关的岩脉，并深入了解矿床形成的构造环境。第二项研究将调查导致南部 LDI 杂岩偏移带内地质域接触处快速结构变化和金属富集的机制。这将测试可能的模型来解释结构变化，包括新的岩浆流入、原晶的机械分离或压滤，以及提供对地质领域的源头和母体岩浆成分的见解。我们将结合详细的测绘和测井、全岩石地球化学、岩相学、地质年代学、矿物化学和放射性同位素来彻底研究该项目的两个不同但相关的目标。通过这样做，我们将培训年轻研究人员掌握在学术界、政府或工业界取得成功的地球科学职业所需的关键技能。 最近的研究表明，LDI 矿可能是在造山环境中形成的，这与大多数 Ni-Cu-PGE 系统不同，大多数 Ni-Cu-PGE 系统通常被认为是与大型火成岩省相关的。本研究生成的数据将用于测试这些 LDI 模型，并提供对构造环境的见解，开发可供 North American Palladium 和其他加拿大勘探公司应用的新矿床模型。新矿产资源的发现和开发对于加拿大经济的福祉至关重要，该项目将提高这一过程的效率。