Collaborative Research: GEO-CM: The occurrences of the rare earth elements in highly weathered sedimentary rocks, Georgia kaolins.

合作研究：GEO-CM：强风化沉积岩、乔治亚高岭土中稀土元素的出现。

• 批准号: 2327660
• 负责人: Yuanzhi Tang
• 金额: $ 27.76万
• 依托单位: Georgia Tech Research Corporation
• 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: 2023-09-15 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2327660&HistoricalAwards=false
• 关键词: Collaborative; Research; GEO; CM; occurrences

Collaborative Research: GEO-CM: The occurrences of the rare earth elements in highly weathered sedimentary rocks, Georgia kaolinsW. Crawford Elliott, Georgia State UniversityYuanzhi Tang, Georgia Institute of TechnologyThe rare earth elements (REE) are a group of critical metals that are widely used in high-tech industries and in creating a green economy. The growing demand, high dependence on international supplies, and vulnerability to potential supply disruption have prompted the US to explore new REE resources, such as natural unconventional resources of REE located in highly weathered sedimentary/regolith settings in the US. Novel and sizeable occurrences of REE has been discovered by the project team in the Georgia Coastal Plain such as the mined kaolins. The overarching goal of this project is to obtain a fundamental understanding of the geochemical factors controlling the sequestration, redistribution, and fractionation of REE in clay-dominant weathering environments, such as the Georgia kaolins as compared to the occurrences of the REE in other weathering settings such as the Chinese laterites. This research will take a multi-scale approach and combine laboratory batch experiments, advanced microscopic and spectroscopic analyses, thermodynamic modeling, as well as characterization and comparison of natural samples from Georgia kaolins and Chinese laterites. Understanding the geochemical factors and processes controlling REE mobility, distribution, and fractionation in these environments can provide the foundation to identify domestic REE resources, and for the rational design of mining/extraction technologies. The proposed work will integrate research with education across multiple levels, both in the academy, industry, and general scientific community. The project will combine student training with undergraduate education and research, as well as K-12 and community outreach. Each activity will emphasize broadening participation of underrepresented groups in geological sciences. The impacts and effectiveness of the proposed activities will be assessed by a dedicated evaluator as well as through existing evaluation structures in campus outreach programs.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.

协作研究：Geo-CM：高高风化的沉积岩岩石中的稀土元素的出现。佐治亚州立大学尤南兹·唐（Georgia Stigralyuanzhi Tang），佐治亚州理工学院稀土元素（REE）是一组关键金属，在高科技行业中广泛使用并创造绿色经济。需求不断增长，对国际供应的高度依赖以及对潜在供应中断的脆弱性促使美国探索了新的REE资源，例如位于美国风化高温的Sedimentary/Regolith环境中的REE的自然非常规资源。 佐治亚州沿海平原的项目团队（例如开采的高岭土）发现了REE的新颖和相当大的事件。该项目的总体目标是获得对控制粘土优势风化环境中REE的隔离，重新分布和分级的地球化学因素的基本理解，例如乔治亚·考林（Georgia Kaolins），例如与其他潮汐设置中的REE发生的情况相比，例如乔治亚（Georgia）的风化环境。这项研究将采用多尺度方法，并结合实验室批处理实验，晚期显微镜和光谱分析，热力学建模以及对乔治亚州高岭土和中国后期天然样品的表征和比较。了解控制REE移动性，分配和分馏中的地球化学因素和过程，可以为识别国内REE资源以及采矿/提取技术的合理设计提供基础。拟议的工作将与学院，工业和一般科学界的多个层次的教育相结合。该项目将将学生培训与本科教育和研究以及K-12和社区外展相结合。每种活动都将强调扩大代表性不足的群体在地质科学中的参与。拟议活动的影响和有效性将由专门的评估者以及校园外展计划中的现有评估结构进行评估。该奖项反映了NSF的法定任务，并被认为值得通过基金会的知识分子优点和更广泛的审查标准来通过评估来获得支持。