The Genesis and Evolution of Metallic Ore Deposits Systems: Insights and Constraints from Mineralogy.

金属矿床系统的起源和演化：矿物学的见解和约束。

• 批准号: RGPIN-2017-05883
• 负责人: McDonald, Andrew
• 金额: $ 1.6万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=711845
• 关键词: Genesis; Evolution; Metallic; Ore; Deposits

Intrusion-related Au and magmatic Fe-Ni-Cu-PGE ore deposits are the most important sources of metallic minerals produced in Canada. With increasing demands being made for the strategic metals produced, there is a critical need to better understand how the minerals that host these elements and their ore deposits, form and change through time, in an effort to improve exploration methods and enhance mineral-processing techniques. To achieve this, research will be conducted into the crystal-chemistry and geological occurrence of two widespread groups of minerals: precious-metal (gold, platinum-group elements) minerals and base-metal sulfides of the pyrrhotite family. Despite the direct relevance of these mineral groups to ore deposits and the impact that a better understanding of them would have on ore-deposit research, our knowledge of what these minerals are and what they can indicate about rocks in which they develop is generally lacking. This can be attributed to: (i) their occurrence in complex intergrowths and small grain-sizes; (ii) variable, poorly defined, chemistries and crystal structures and (iii) comprehensive studies that integrate mineralogical data with geological data (structures, fluids, etc.). The proposed research is novel in scope as it will address the very basic components of ore deposits, the minerals themselves, filling knowledge gaps that exist in our understanding of the distribution and character of these minerals. The program will build upon the existing strengths and expertise of the applicant and will involve a significant training component that will increase the number of highly qualified personnel available to the mining and minerals sector. It will involve existing and novel, lab-based techniques required to address the complex, atomic-scale issues related to these minerals, complimented by larger-scope, field-based studies that will provide firm data related to the provenance and geological history of the rocks in which the minerals occur. The research goals of the program will be to: (1) document the crystal-chemical variations in precious-metal minerals and pyrrhotite that exist; (2) derive information regarding conditions of formation, based on the chemistry and crystal structures of these minerals and (3) apply the data obtained to understand how ore deposits develop and evolve through time.

与入侵相关的AU和Magmatic Fe-Ni-Cu-pge矿石沉积物是加拿大生产的金属矿物质的最重要来源。 随着对生产的战略金属的需求不断提高，有一个迫切需要更好地了解这些元素及其矿石沉积物如何，随着时间的推移形成和变化，以改善勘探方法并增强矿物质处理技术。为了实现这一目标，将研究两种矿物质的晶体化学和地质发生：珍贵金属（黄金，铂群元素）矿物质和黄铁矿家族的碱基硫化物。 尽管这些矿物质群体与矿床的直接相关性以及对它们对矿石的理解的影响对矿石的研究的影响，但我们对这些矿物质是什么以及它们可以表明的关于它们开发的岩石所表明的知识。 这可以归因于：（i）它们的出现在复杂的生长和小晶粒尺寸中； （ii）变量，定义不佳，化学和晶体结构以及（iii）将矿物学数据与地质数据（结构，流体等）相结合的综合研究。 拟议的研究在范围内是新颖的，因为它将解决矿藏的非常基本的组成部分，即矿物质本身，填补了我们对这些矿物质分布和特征的理解中存在的知识差距。 该计划将基于申请人的现有优势和专业知识，并将涉及一个重要的培训组成部分，以增加采矿和矿产领域可用的高素质人员的数量。 它将涉及现有的，新颖的基于实验室的技术，以解决与这些矿物质有关的复杂的，原子尺度的问题，并受到较大范围的基于野外的研究的赞赏，这些研究将提供与矿物发生的岩石的出处和地质历史相关的公司数据。 该计划的研究目标将是：（1）记录存在的珍贵金属矿物质和金刚石中存在的晶体化学变化； （2）根据这些矿物质的化学和晶体结构得出有关形成条件的信息，（3）应用获得的数据以了解矿石沉积如何随着时间的推移而发展和发展。