The new discovery this time includes vein m22 and porphyry-type mineral deposits BK1, BK2, BK3 and BK5, in which porphyry-type mineral deposits BK1 and BK2 are major mineral deposits meeting the exploration standards, while the other mineral deposits meet the general prospecting standards.
The results show that magmatism and metallogeny in the Yixingzhai and Boqiang-Gengzhuang mining regions occurred during 142–130 Ma, starting with felsic granite porphyry with Mo–Cu mineralization, and intermediate magma associated with gold mineralization.
The Yixingzhai gold deposit is located in the southern part of the Hengshan Complex. The Mesoproterozoic-Paleozoic carbonate sedimentary cover has been mostly eroded in the mine area, the relicts of which occur only in the southwest and the top of the collapsed breccia pipe.
The Yixingzhai pluton is the main host rock of the gold veins. The TTG gneisses of the basement were intruded by a series of NW trending meta-dolerite dikes. The NW trending Yixingzhai fault, Longshan fault and the broadly N–S (345–355) trending secondary faults are the main structures controlling magma intrusion and ore mineralization, among which the N–S trending faults are the main host for the auriferous quartz veins.
The granite porphyry, quartz porphyry, diabase and diorite porphyry occurring as stocks and dikes, are widely distributed in the mining area. There are also 4 sub-volcanic pipes, named Hewan, Nanmenshan, Ti ........
