微区分析是现代分析技术在地质研究应用中的一个重要领域，通过电子探针对矿物的微区分析，提供了矿床成因理论研究的新依据。本文以金银互化物的研究为例，讨论了在不同成因类型矿床中，金－银构成一个连续的类质同象系列，且变化是有规律可循，其微量元素的含量与该矿床成矿地质环境和相应的地球化学场有关，从而为找矿提供了新的地质信息，拓宽了寻找同类伴生元素矿床或发现新类型矿床的途径 Micro-area analysis is an important field of modern analytical techniques in the application of geological research. The micro-area analysis of minerals by electron probes provides a new basis for the study of the genesis of deposits. In this paper, taking the study of Au-Ag intermetallics as an example, it is discussed that Au-Ag forms a continuous series of isomorphic series in different generative types of deposits, and the changes follow a regular pattern. The content of trace elements in this deposit The geological environment of the ore is related to the corresponding geochemical field, thus providing new geological information for prospecting, broadening the ways of finding similar associated elemental deposits or discovering new types of ore deposits