The Buerkesitai granite where the Adayi gold ore deposit occurs is composed of host rocks, diorite microgranular enclaves and intermediate dyke swarms. The relative composition of geochemistry is one of the most effective means for determining the mixture of magma, whereas the concentrations of gold and copper geochemical prospecting samples from different areas of the host rock can identify the relationship between gold and copper ore potential and the mixture of magma. The patterns of REE and trace elements are similar to those of the host rock, diorite microgranular enclaves and intermediate dyke swarms. Harker diagrams, ratio diagrams in the same denominator, correlation diagrams and ratio diagrams of trace elements in the same denominator of the host rock, diorite microgranular enclaves and intermediate dyke swarms all have the same linear trends, which means that significant element migration and transfer of component once occurred. The host rock has high gold and copper concentrations and their regularities of distribution are similar. The fact that the gold and copper anomalies are scattered around areas where abundant diorite microgranular enclaves exist indicates that the mantle-sourced basic end-member represented by diorite microgranular enclaves might have provided the material source for gold and copper mineralization. The association between gold and copper mineralization potential and magma mixture indicates that one of the most important reasons for the enrichment of gold and copper in Darbut tectonic-magmatic belt is the contribution of the mantle-sourced basic end-member to metallogenesis.