Experimental Determination of the Solubility of PGE in Hydrothermal Chloride Solutions

PGE在热液氯化物溶液中溶解度的实验测定

• 批准号: 0229495
• 负责人: Scott Wood
• 金额: $ 29.99万
• 依托单位: Regents of the University of Idaho
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-12-01 至 2006-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0229495&HistoricalAwards=false
• 关键词: Experimental; Determination; Solubility; PGE; Hydrothermal

Wood0229495There is debate in the scientific literature as to the extent to which the platinum-group elements (PGE, e.g., platinum, palladium, iridium) can be transported and concentrated by hydrothermal fluids to form ore deposits. The debate is hampered by a lack of experimental data with which to test the hypothesis that hydrothermal processes play a role in the concentration of the PGE to economic levels. To redress this lack of data, a series of experiments will be conducted. Some of these experiments will attempt to determine the relative solubilities of palladium, platinum, and iridium in hydrothermal solutions of geological relevance. Other experiments will be conducted to simulate the effect of hydrothermal fluids on magnesium-rich; PGE-bearing rocks similar to those in many PGE occurrences. The latter experiments will attempt to directly model hydrothermal processes that have occurred in the Marathon copper-palladium deposit in the Coldwell Complex, Ontario. The mineral assemblages and conditions employed in the latter experiments will be based on concurrent field-based research on the deposit being conducted by colleagues at the University of Windsor (I.M. Samson, B.J. Fryer) and the University of Waterloo (R. Linnen). A postdoctoral fellow, an undergraduate student, and a graduate student will participate in the project and will be trained in aqueous geochemistry. Both will be encouraged to present their work at national scientific meetings, and the postdoctoral fellow will participate in teaching of undergraduate geochemistry. The project will strengthen and expand existing collaboration between the PI and Canadian colleagues. The results of this research will be of direct socioeconomic benefit via the development of improved exploration models for PGE deposits. They may also lead to improved methods of hydrometallurgical treatment of PGE ores and to a better understanding of the corrosion of PGE and PGE-alloys in hydrothermal solutions.

Wood0229495在科学文献中争论的是，可以通过热液热流体运输并浓缩铂类元素（PGE，PGE，PGE，PGE，PGE，例如铂，钯，虹膜）。缺乏实验数据来妨碍辩论，这些数据检验了水热过程在PGE浓度到经济水平中起作用的假设。为了纠正这种缺乏数据，将进行一系列实验。这些实验中的一些将试图确定地质相关性水热溶液中钯，铂和虹膜的相对溶解度。将进行其他实验，以模拟水热液对富镁的影响。含PGE的岩石与许多PGE发生的岩石相似。后一个实验将尝试直接建模在安大略省Coldwell综合体中马拉松铜 - 甲基矿床中发生的水热过程。后一个实验中采用的矿物组合和条件将基于对温莎大学（I.M. Samson，B.J。Fryer）和滑铁卢大学（R. Linnen）进行的同事进行的基于现场的研究。博士后研究员，一名本科生和研究生将参加该项目，并将接受地球化学水性培训。两者都将鼓励他们在国家科学会议上介绍他们的工作，博士后研究员将参加本科地球化学的教学。该项目将加强和扩大PI与加拿大同事之间的现有合作。这项研究的结果将通过开发改进的PGE沉积勘探模型来获得直接的社会经济利益。它们还可能导致改进的PGE矿石水平铝处理方法，并更好地理解水热溶液中PGE和PGE合金的腐蚀。