Collaborative Research: Testing endmember hypotheses for the source of mineralizing fluid(s) in iron oxide - copper - gold (IOCG) deposits

合作研究：测试氧化铁-铜-金 (IOCG) 矿床中矿化流体来源的端元假设

• 批准号: 2233425
• 负责人: Adam Simon
• 金额: $ 44.43万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-15 至 2026-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2233425&HistoricalAwards=false
• 关键词: Collaborative; Research; Testing; endmember; hypotheses

Societal demand for critical minerals like copper will only expand as our use of technology such as battery electric vehicles, solar panels and wind turbines increases. It is important to understand how elements such as copper concentrate in ore deposits. One major obstacle facing the growing demand for copper is how to explore for and find copper ore deposits. This project focuses on improving our understanding of how two types of copper ore deposits form and developing methods to find undiscovered deposits. It will also support a graduate student and several undergraduates who will be trained in mapping, logging, sampling, and laboratory methods.This project will be the first to constrain the multi-element isotopic signature of rocks in a large iron oxide - copper - gold (IOCG) mineral system (Humboldt) that serves as the end-member type locale for the sedimentary basin derived evaporitic brine genetic model and compare those data with a purely magmatic-hydrothermal porphyry-copper mineral system (Yerington), and a seemingly mixed basinal brine and magmatic-hydrothermal system IOCG system (Ernest Henry). The integrated isotopic analysis should reveal end-member chemical signatures that can be used to define these systems as well as potentially be used as a geochemical vector to find unknown mineralization systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

随着我们对电动汽车、太阳能电池板和风力涡轮机等技术的使用增加，社会对铜等关键矿物的需求只会增加。 了解铜等元素如何在矿床中富集非常重要。铜需求不断增长面临的一大障碍是如何勘探和发现铜矿藏。该项目的重点是提高我们对两种类型的铜矿床如何形成的理解，并开发寻找未发现矿床的方法。它还将支持一名研究生和几名本科生，他们将接受测绘、测井、采样和实验室方法方面的培训。该项目将是第一个在大型氧化铁-铜-金中限制岩石多元素同位素特征的项目（IOCG）矿物系统（洪堡），作为沉积盆地蒸发盐成因模型的端元类型场所，并将这些数据与纯岩浆-热液斑岩-铜矿物系统进行比较（Yerington），以及一个看似混合的盆地卤水和岩浆-热液系统 IOCG 系统（Ernest Henry）。综合同位素分析应揭示最终成员化学特征，可用于定义这些系统，并有可能用作寻找未知矿化系统的地球化学矢量。该奖项反映了 NSF 的法定使命，并通过评估被认为值得支持利用基金会的智力优势和更广泛的影响审查标准。