采用空间分辨率高和高灵敏度的质子微探针和微束ＰＩＸＥ技术，测定地幔流体结晶后各组成矿物的微量元素组成及其在不同矿物内的分布状况。对云南双沟蛇绿岩中存在的地幔交代作用进行的研究结果表明，由地幔流体结晶而成的矿物（单斜辉石、尖晶石、石榴石、绿泥石），其微量元素组成与分布特征受地幔交代作用过程的控制。这对于进一步探讨双沟地幔交代作用过程中微量元素的地球化学行为很有意义 The microscopic microprobe and micro-beam PIXE technique with high spatial resolution and high sensitivity were used to determine the trace element composition of minerals and their distribution in different minerals after the fluid crystallization in the mantle fluid. The study on the mantle metasomatism existing in the Shuangogou ophiolite, Yunnan Province, shows that the trace elements of the minerals crystallized from the mantle fluid (clinopyroxene, spinel, garnet and chlorite) The distribution characteristics are controlled by the mantle metasomatism process. This is of great significance to further discuss the geochemical behavior of trace elements in the process of metasomatism in Shuanggou