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Geoscience ›› 2023, Vol. 37 ›› Issue (06): 1567-1579.DOI: 10.19657/j.geoscience.1000-8527.2023.051

• Ore Deposits and Regional Metallogeny • Previous Articles     Next Articles

Soil Geochemical Characteristics and Ore Prospecting Prediction in Gaojianzi Area, Northern Hebei Province

LIANG Ming1(), GAO Wen1(), LUO Xianrong1, WANG Xiaodong2, LIU Xiujuan3, CHEN Hao2, LIU Panfeng1, ZHU Feng2, LI Wei2   

  1. 1. Guilin University of Technology, College of Earth Sciences, Institute of Concealed Mine Prospecting, Guilin, Guangxi 541006, China
    2. The Fourth Geological Team of Hebei Bureau of Geology and Mineral Resources, Chengde, Hebei 067000, China
    3. 514 Brigade of North China Geological Exploration Bureau, Chengde, Hebei 067000, China
  • Received:2022-11-02 Revised:2023-05-17 Online:2023-12-10 Published:2024-01-24

Abstract:

The Gaojianzi area is located in the Inner Mongolia-Great Khingan fold system within the Qipanshan middle depressional tectonic units, and is an important metallogenic area in northern Hebei Province.Quaternary sediments in the area are relatively thick, and previous exploration work is rare.To extract mineralization information and apply it to the optimization and delineation of prospecting targets, we conducted a 1:10,000 soil geochemical survey in the area, and statistical analysis on the composition of nine representative ore-related elements, i.e., Au, Ag, Bi, Cu, Pb, Zn, Sb, Mo, and Mn.Our results show that Au, Ag, and Mo are favorable for local mineralization.The R-type cluster analysis was applied to classify the nine elements, and four element assemblages, i.e., Cu-Zn-Mn, Au-Pb-Bi, Sb-Mo and Ag, were classified.The cumulative frequency method is used to calculate the lower limit of single element anomaly and map the single element anomaly.The normalized areal productivity is used to evaluate the characteristics of single element anomaly parameters, and four anomaly targets and two key anomaly verification areas are delineated.In the anomaly target, the soil geochemical profile is used to verify the anomaly and delineate two favorable mineralization locations.Four gold and silver orebodies were found through the verification of trenching engineering.We suggest that useful prospecting information can be extracted from the study area with soil geochemical survey.

Key words: soil geochemical survey, geochemical anomaly, normalized areal productivity (NAP), ore prospecting prediction, gold and silver orebody, Gaojianzi area

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