Structural-magmatic mineralization of Sankuanggou-Duobaoshan metallogenic belt,Heilongjiang

Sankuanggou-Duobaoshan Cu-Mo-Au metallogenic belt is a well-known mineral producing area in northern China,producing Duobaoshan and Tongshan large-scale porphyry-type copper polymetallic deposits,Zhengguang large-scale magmatic hydrothermal gold deposit,Sankuanggou small-scale skarn-type Cu-Fe deposit and numerous Cu-Mo-Au mineral deposits(occurrences).According to the new progress and achievements of geological work obtained in recent years,the geo-tectonic evolution,ore-bearing construction,ore-forming age and magmatic mineralization of this metallogenic belt have been analyzed and summarized through using the theories about plate tectonics and mineralization of island arc,and then Ordovician-Early Triassic porphyry-epithermal Cu-Mo-Au-Zn complex metallogenic series,Late Triassic-Early Jurassic neutral-acidic Cu-Fe-Mo ore-forming series of magmatic hydrothermal intrusion,and Late Jurassic-Early Cretaceous volcanic-intrusive magmatic hydrothermal Cu-Mo-Au-Ag mineralization series have been divided.