Collaborative Research: ICPMS and Laser Ablation-ICPMS (LA-ICPMS) for the Determination of Metals in Fluid Inclusions: A Pilot Study

9505982 Ruiz本提案旨在评估ICPMS和LA-ICPMS在流体包裹体中微量元素（包括稀土元素）测定中的应用。 初步数据表明，在这个建议，以及表征样品的散装渗滤液分析是有用的，也表明它是可能的，分析单一的流体包裹体的LA-ICPMS。 完善这些技术可以使我们直接分析来自热液系统的各个阶段的流体，这反过来又将进一步加深我们对成矿流体中金属迁移的理解。 我们将在本研究中实现三个主要目标：（1）充分开发用于分析REE和其他岩石学和经济学上重要的痕量金属的块状包裹体的挤压-浸出ICPMS，（2）评估LA-ICPMS用于研究单一流体包裹体的全部潜力，（3）对Bingham的块状流体包裹体进行详细的ICPMS研究和对单一流体包裹体进行LA-ICPMS研究，贱金属斑岩系统，以确定该系统中的大部分金属携带的流体。 宾厄姆之所以被选中，是因为它被研究得非常好，并且在石英中含有大量的包裹体。 本文所提出的研究，是为了限制目前关于与岩浆系统有关的矿床中金属来源的争论。

9505982 Ruiz This proposal intends to evaluate the use of ICPMS and LA-ICPMS for the determination of trace elements, including rare earth elements (REE) in fluid inclusions. Preliminary data shown in this proposal suggest that the bulk leachate analyses of well characterized samples are useful and also indicate that it is possible to analyze single fluid inclusions by LA-ICPMS. perfecting these techniques may allow us to directly analyze fluids from various stages of hydrothermal systems which in turn will further our understanding of the transport of metals in ore-forming fluids. We will accomplish three main goals during this study: (1) fully develop the crush-leach ICPMS for analyzing bulk inclusions for REE and other petrologically and economically important trace metals, (2) evaluate the full potential of LA-ICPMS for the study of single fluid inclusions, (3) conduct a detailed ICPMS study on bulk fluid inclusions and LA-ICPMS study on single fluid inclusions from the Bingham, base metal porphyry system in order to determine which fluids carried the bulk of the metals in this system. Bingham was chosen because it is very well studied and contains large inclusions in quartz. Studies as the one proposed here are needed to constrain current debates on sources of metals in deposits associated with silicic magma systems.