US-France Cooperative Research: Chemical Kinetics of Ore andRock-Forming Minerals in Hydrothermal Systems

美法合作研究：热液系统中矿石和造岩矿物的化学动力学

• 批准号: 8815318
• 负责人: David Crerar
• 金额: $ 1.56万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-03-01 至 1991-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8815318&HistoricalAwards=false
• 关键词: US; France; Cooperative; Research; Chemical

This award will support collaborative research between Dr. David Crerar, Princeton University, and Dr. Jacques Schott, Laboratoire de Geochimie, University of Paul Sabatier, France. The objective of this research is to study the dissolution rates and reaction mechanisms of minerals such as calcite, fluorite, quartz and feldspar in water from 25 degrees to over 400 degrees Centigrade. In this joint project, the hydrothermal laboratories at Princeton University will be used to measure mineral reaction rates, and their variation with solution composition and degree of crystal strain. The reacted crystals will then be analyzed by surface spectroscopic techniques in Toulouse and affiliated French laboratories to provide detailed information on reaction processes at mineral surfaces and the kinetic mechanisms of mineral reactivity. This work has application to understanding formation of mineral deposits under non-equilibrium conditions typical of upper crystal processes and should provide insight into the behavior of fluids and mineral in projected radwaste repositories. The research by the Princeton and Toulouse groups has been complementary, with Princeton concentrating on hydrothermal dissolution rates and processes, and Toulouse on lower-T surface reaction mechanisms. This project will combine their expertise in mineral reaction kinetics and allow the U.S. group to use high technology surface spectroscopic and analysis facilities not otherwise available to them.

该奖项将支持普林斯顿大学的 David Crerar 博士和法国保罗·萨巴蒂尔大学地球化学实验室的 Jacques Schott 博士之间的合作研究。 本研究的目的是研究方解石、萤石、石英和长石等矿物在25℃至400℃以上水中的溶解速率和反应机制。 在这个联合项目中，普林斯顿大学的水热实验室将用于测量矿物反应速率及其随溶液成分和晶体应变程度的变化。 然后，反应后的晶体将在图卢兹和附属法国实验室通过表面光谱技术进行分析，以提供有关矿物表面反应过程和矿物反应动力学机制的详细信息。 这项工作可用于了解上层晶体过程典型的非平衡条件下矿物沉积的形成，并应提供对预计的放射性废物储存库中流体和矿物行为的深入了解。 普林斯顿大学和图卢兹研究小组的研究是互补的，普林斯顿大学专注于水热溶解速率和过程，而图卢兹研究小组则专注于低温表面反应机制。 该项目将结合他们在矿物反应动力学方面的专业知识，并允许美国集团使用他们无法使用的高科技表面光谱和分析设施。