METALLOGENIC SERIES AND MODEL OF COPPER AND GOLD POLYMETALLIC DEPOSITS IN DAYAOSHAN, EASTERN GUANGXI

The copper and gold polymetallic deposits in Dayaoshan area are dominated by porphyry type, skarn type and fault-altered rock type, with mainly gold, associated by copper, silver, lead and zinc mineralization which form a completed metallogenic series. Base on the study on the characteristics of deposits and their tectonic setting, two metallogenic series including four sub-series are defined in the area. The metallogenesis is closely related to shallow-ultrashallow igneous rocks. The magmatic movement provides heat source and hydrothermal fluid for ore-forming. The faults perform as migration path and control the distribution of ore bodies. The Sinian-Cambrian strata are major source beds of ore. A regional metallogenic model of source bed-structure-magmatism is established.