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Metal Mine ›› 2015, Vol. 44 ›› Issue (10): 110-115.

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Metallogenic Regularity of the Gold-polymetallic Deposits in Wulonggou Area,Qinghai Province

Ma Guodong1,2,Han Yu2,Chen Sulong2,Li Yulian2,Jia Jiantuan3   

  1. 1.Qinghai Geological Survey,Xining 810000,China;2.The First Institute of Geology and Mineral Resources of Qinghai Province,Haidong 810600,China;3.Integrated Institute of Geology and Mineral Resources Exploration of Qaidam in Qinghai Province,Golmud 816000,China
  • Online:2015-10-15 Published:2015-11-20

Abstract: Wulonggou gold deposit is the most potential mineralization deposit in eastern Kunlun metallogenic belt of Qinghai province.Based on collecting the geological information of Wulonggou gold deposit including its ore-forming tectonic background,regional strata and intrusions,structure and so on,firstly,the geological characteristics of typical gold-polymetallic deposits in Wulonggou area are analyzed in depth;then,the ore-controlling factors of the gold-polymetallic deposits in Wulonggou area are analyzed systematically from the perspective of strata,magmatic rocks and structures;finally,the metallogenic regularity of the gold-polymetallic in Wulonggou area are summarized from the aspects of metallogenic time,space distribution and ore genesis.The results show that:①Wulonggou gold deposit is located in the ductile shear zones and it is controlled obviously by the structure evolution;②the gold deposits have the multiple stages and long-term distribution regularities in time domain while in spatial domain,the gold deposits are along the three ductile and brittle-ductile shear zones strictly,the deposits within the shear zones has the distribution characteristics of equidistance and parallelism;③the gold-polymetallic deposits are located in the intersection zones of the shear zones and NE-SW trending fault,they are distributed in groups frequently;④the gold orebody is formed before the polymetallic ore,deep magma is the main composition of crust-mantle mixed source and crust source,they are the important source of ore-forming materials,associated with the tectonic evolution,the ore-forming materials are activated further and enriched into polymetallic orebody.The above research results have some reference for the further prospecting work of gold-polymetallic and tectonic hydrothermal alteration type deposits in this area.

Key words: Gold-polymetallic, Geological characteristics of deposits, Ore-controlling factors, Genesis of mineral deposit, Mineralization regularity, Prospecting work