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云南富碱斑岩由地壳深部的源岩分离熔融形成，该源岩则由早期侵入陆壳的幔源超基性岩与陆壳组分混合而成。斑岩成矿作用的成矿物质主要来源于岩浆，铅同位素资料表明它们有深部流体相、早期陆壳和幔源岩浆三种来源，但归根结底可能本区存在异常上地幔。地质地球化学综合分析认为，铜金等元素主要来源于幔源组分，铅锌等元素来源于陆壳组分，源岩重熔和岩浆演化使成矿元素得到进一步的富集。在不同的构造单元中，源岩的壳幔组分比、重熔程度等存在差异，因而富碱斑岩特征及成矿作用有别，出现两个成矿亚系列。
Yunnan alkali-rich porphyry is formed by the separation and melting of source rocks in the deep crust. The source rocks are composed of mantle-derived ultrabasic rocks and continental crust components that intruded into the continental crust in the early stage. The metallogenic materials of porphyry metallogenesis are mainly derived from magmatic and lead isotopic data, indicating that they have three sources: deep fluid phase, early continental crust and mantle magma. However, there may be anomalous upper mantle in the end. According to the geo-geochemical analysis, elements such as copper and gold are mainly derived from mantle source components, lead and zinc are derived from continental crust components, and the ore-forming elements are further enriched by source rock remelting and magmatic evolution. In different tectonic units, there are differences in crust-mantle composition ratio and degree of remelting of source rocks. Therefore, the characteristics of alkali-rich porphyries and mineralization are different, and two metallogenic sub-series appear.