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岩浆演化过程中岩浆—流体阶段发生的相转变过程控制了元素在两相之间的分配行为。作为与岩浆热液活动有密切成因联系的金矿床,其在硅酸盐熔体和流体中的性状及两相间的分配行为是控制该类矿床成矿的重要物理化学因素。介绍了金在流体、熔体中的性状,论述了其在流体/硅酸盐熔体间的分配行为不仅受温度、压力、氧逸度等物理化学条件的影响,还受流体组分(阴离子、阳离子)、熔体组成(Na2O+K2O/Al2O3,Na/K,SiO2,NBO/T)的制约;最后对目前实验研究存在的问题、改进方法以及今后的研究方向进行了探讨。
The phase transition process during the magmatic-fluid phase during magmatic evolution controls the distribution of the elements between the two phases. As a gold deposit closely related to magmatic hydrothermal activity, its properties in silicate melt and fluid and the distribution between two phases are important physico-chemical factors controlling the mineralization of this type of deposit. The properties of gold in fluid and melt are introduced. The distribution behavior of gold in fluid / silicate melt is not only affected by the physical and chemical conditions such as temperature, pressure and oxygen fugacity, but also influenced by the fluid component (anion , And the composition of the melt (Na2O + K2O / Al2O3, Na / K, SiO2 and NBO / T). Finally, the existing problems in the experimental research, the improvement methods and the future research directions are discussed.