Applications of Laser Ablation ICPMS (with a heating sample cell) As A Routine Analytical Technique for Determination of Elemental Concentrations in Single Fluid Inclusions

9814754 Ghazi本研究是一项初步研究（LA-ICPMS-9506023）的扩展，该研究旨在研究和开发最适合于天然流体包裹体中主量和痕量元素浓度常规测定的方法。 初步结果表明，利用一套微毛细管内的人工流体包裹体定量测定天然流体包裹体中的元素浓度是可能的。研究目标有三个方面：1）建立和评估一个新的简单的加热阶段的多相流体包裹体的均匀化，2）检查各种校准方法的分析单一的流体包裹体，和3）应用最合适的技术来检查四套研究良好的流体包裹体样品。校准技术包括使用：1）NIST玻璃参考材料，2）一组新的微毛细管型人工流体包裹体，包含标准溶液中的更多选择的元素，包括稀土元素（REE），以及3）含有已知浓度的特定元素的合成流体包裹体。在选择最合适的校准技术后，沉积盆地中岩盐流体包裹体中的元素浓度（例如，Palo Dura和Parabel），岩浆中的石英（例如，Capitan Pluton）和来自斑岩铜矿的热液石英（例如，宾厄姆和萨尔Cheshmeh，伊朗）将被确定。 对于沉积盆地，流体包裹体提供了有关流体起源及其演化的信息，有助于了解岩盐形成的沉积和成岩环境以及盆地形成时海水的组成。岩浆源流体包裹体的分析是必不可少的，以解开流体-岩石相互作用的历史，成岩建模，这些流体的金属运输能力的更精确的模型的建设，并在与岩浆系统有关的矿床中的矿石金属来源的模型的改进。

9814754GhaziThis research is an extension of an initial study (EAR-9506023) to investigate and develop the most suitable method for routine determination of major- and trace-element concentrations in natural fluid inclusions by LA-ICPMS. The preliminary results suggest that it is possible to quantitatively measure elemental concentrations in natural fluid inclusions by using a set of artificial fluid inclusions within microcapillary tubes. The research objectives are three-fold; 1) to build and evaluate a new simple heating stage for homogenization of multi-phase fluid inclusions, 2) to examine various calibration methodologies for analysis of single fluid inclusions, and 3) to apply the most suitable technique to examine four suites of well studied fluid inclusion samples. The calibration techniques include using; 1) the NIST glass referencematerials, 2) a set of new microcapillary-type artificial fluid inclusions containing a larger selection of elements in standard solution including the rare earth elements (REE), and 3) synthetic fluid inclusions containing known concentrations of specific elements. Upon selection of the most suitable calibration technique, elemental concentrations in fluid inclusions in halite from sedimentary basins (e.g., Palo Dura and Paradox), quartz from silicic magmas (e.g., Capitan Pluton), and hydrothermal quartz from porphyry copper deposits ( e.g., Bingham and Sar Cheshmeh, Iran) will be determined. For the sedimentary basins, fluid inclusions provide information on the origin of the fluid and its evolution in the context of understanding the sedimentary and diagenetic environments in which the halites were formed and the composition of the seawater at the time of basin formation. Analyses of magmatically-derived fluid inclusions are essential to unraveling the history of fluid-rock interactions, petrogenetic modeling, construction of more precise models of the metal-transport capabilities of these fluids, and refinement of models of ore metals sources in deposits associated with silicic magma systems.