Experimental Studies of Ore-Forming Environments Using Synthetic Fluid Inclusions

要求提供资金，以进行合成流体包合 成矿地球化学作用研究 环境. 合成流体包裹体将用于 测定PVTX在H2O-NaCl-KCl中的流体性质 系统至10 kbar和1000 oC。 这项研究的成果 将是描述PVTX的计算机程序和图形 H2O-NaCl-KCl的性质，可用于解释 从天然包裹体中获得的显微测温数据。 一 第二项研究将调查氢的影响 天然流体包裹体的增益/损失。 合成流体 将在已知的fO 2条件下进行夹杂物，然后重新 在已知但可变的fO 2条件下平衡， 为了量化氢岩含量变化的速率， 温度、逸度梯度和深度的函数 矿物表面。 这些信息将用于 计划实验来确定氢的影响 （1）包裹体流体的形态和可能的 捕集后的变化，（2）氢（D/H）同位素 包裹体沃茨的组成;（3）包裹体中 各种子矿物，通常在 天然流体包裹体 这些数据可用于 估计圈闭后的历史（隆起路径） 天然流体包裹体所经历的。

Funding is requested to conduct synthetic fluid inclusion studies of geochemical processes applicable to ore-forming environments. Synthetic fluid inclusions will be used to determine PVTX properties of fluids in the H2O-NaCl-KCl system to 10 kbars and 1000oC. The product of this study will be a computer program and graphics describing the PVTX properties of H2O-NaCl-KCl that can be used to interpret micro thermometric data obtained from natural inclusions. A second study will investigate the implications of hydrogen gain/loss by natural fluid inclusions. Synthetic fluid inclusions will be made at known fO2 conditions and then re- equilibrated at known but variable fO2 conditions in order to quantify the rate of hydrogen fucacity change as a function of temperature, fugacity gradient and depth below the mineral surface. This information will then be used to plan experiments to determine the effect of hydrogen gain/loss on (1) speciation of inclusion fluids and possible post-trapping changes, (2) the Hydrogen (D/H) isotopic composition of inclusion waters and (3) the solubility of various daughter minerals that are commonly observed in natural fluid inclusions. These data may then be used to estimate post-entrapment histories (uplift paths) experienced by natural fluid inclusions.