Partitioning of Au, Cu and Mo between phases in volatile-bearing magmatic systems: Experimental constraints on the metal capacity and transport properties of andesitic magmas

本研究的主要目的是在实验上确定金、铜和钼在安山岩熔体中的溶解度和扩散系数，以及在典型岩浆条件下这些金属在硅酸盐、硫化物/硫酸盐和流体相之间的分配。金属或含金属化合物(如氧化物、氯化物、硫化物等)的溶解度/扩散率和分配将被确定为安山岩岩浆中挥发分浓度(H2O、Cl、S)的函数。这些结果对于理解和模拟与岩浆系统中金属矿化和运移有关的自然过程是必要的。这些数据对于基础研究和经济目的都将是重要的。

The principal goal of this study is to determine experimentally the solubility and diffusivity of Au, Cu and Mo in andesitic melt as well as the partitioning of these metals between silicate, sulfide/sulfate and fluid phases at typical magmatic conditions. The solubility/diffusivity and partitioning of metals or metal-bearing compounds (e.g., oxides, chlorides, sulfides etc.) will be determined as a function of volatile concentrations (H2O, Cl, S) in andesitic magma. The results are required for understanding and modeling natural processes related with the mobilization and transport of ore metals in magmatic systems. The data will be important for fundamental research as well as for economic purposes.