Geochemical Characteristics and Exploration Model of the Jiuzhanggou Gold Deposit,Songxian County,Henan Province
Jiuzhanggou gold deposit in Songxian County,Henan Province,is located in the northern section of the Manyu-Dianfang gold ore belt in the Xiong'ershan-Waifangshan ore concentration area.It is a typical large-scale tectonic altered rock type gold deposit.Firstly,the prospecting target area was delineated by 1∶50 000 stream sediment survey.Secondly,the mineralization enrichment site was determined by 1∶10 000 soil geochemical survey.Finally,the tectonic fracture zone and mineralization intensity were identified by rock geochemical(primary halo)survey,and the relative denudation degree of orebody was predicted.The results show that geochemical measurements at different scales provide prospecting information at different stages for the exploration of the gold deposit.Among them,the stream sediment survey delineated the 11-C-Au anomaly in the Jiuzhanggou mining area.The soil geochemical survey found the 1-A1-Au-Ag-Pb-Cu-Hg-As-Bi-Ni anomaly in Jiuzhanggou.The peak position of trace elements in the primary halo profile determined the mineralization alteration zone of F1 structure,and finally obvious prospecting results was achieved.By summarizing the geochemical anomaly characteristics and prospecting indicators of the deposit,an exploration geochemical model was established to provide theoretical guidance for the exploration of the same type of gold deposits in the region and around the mining area.
structural altered zonegeochemical characteristicsprospecting indicatorexploration modelprospecting predictionJiuzhanggou gold depositHenan Province
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