姚安金矿床与富碱侵入岩体具有密切时空关系[1] 。本研究运用稀土元素地球化学示踪方法 ,探讨了富碱侵入岩与姚安金矿床之间可能的成因联系。1　地质背景我国滇西“三江”地区沿哀牢山—金沙江深大断裂及其附近 ,分布着一个总体呈这个北西走向的巨型富碱侵入岩带 ,带内分布着大 Yao’an gold deposit and alkali-rich intrusive rock has a close relationship between space and time [1]. In this study, the possible genetic relationship between the alkali-rich intrusive rocks and the Yao’an gold deposit was discussed using the REE geochemical tracing method. 1 Geological background Along the Ailaoshan-Jinshajiang Deep Fault and its vicinity in the “Sanjiang” area of ​​Western Yunnan, China, there is a giant alkali-rich intrusive rock belt which is generally distributed along the northwest direction with large