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Gold Science and Technology ›› 2022, Vol. 30 ›› Issue (4): 498-507.doi: 10.11872/j.issn.1005-2518.2022.04.009

• Mineral Exploration and Resource Evaluation • Previous Articles    

Application of High Density Electrical Method in Prospecting for Duoguma Antimony Gold Ore Spot in North Bayan Har Mountains

Dexi MA1(),Xirong REN2(),Jiong SONG1,Baowei ZHANG1   

  1. 1.Geophysical Survey Center, China Geological Survey, Langfang 065000, Hebei, China
    2.Second Geological Exploration Institute of Gansu Bureau of Geology and Mineral Resources, Lanzhou 730000, Gansu, China
  • Received:2021-12-28 Revised:2022-03-29 Online:2022-08-31 Published:2022-10-31
  • Contact: Xirong REN E-mail:626385001@qq.com;rxr5894091@163.com

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Abstract:

In order to solve the problem that restrict the breakthrough of prospecting（such as ore controlling factors and deposit genesis） in Duoguma antimony gold mining area， the 1∶200 000 As乙41Sb （Au） stream sediment anomaly and 1∶50 000 Au、As、Sb stream sediment anomaly in Duoguma area of Maduo County were examined by high-density electrical method， and the North Duoguma antimony gold mining point and its periphery were mainly detected.The plane resistivity anomaly shows that the regional NW trending Kunlun Mountain pass Maduo-Gande-Jiuzhi fault is transformed by the later NE trending fault dislocation in this area.High value charge rate （polarizability） anomalies are superimposed at the intersection of the two groups of fault structures. The long axis direction of these anomalies is consistent with the trend of regional structure， and the location is mainly distributed on the side of structural tendency.Combined with the analysis of resistivity section anomalies， these widely distributed and strong anomalies are mainly distributed in the contact zone between regional structure and surrounding rock. The charging rate （polarizability） anomaly combined with the anomaly of polymetallic elements such as antimony and gold in geochemical exploration is selected as the prospecting target for engineering verification.The antimony gold orebody is revealed through trenching engineering， realizing the prospecting breakthrough of the polymetallic prospecting target.

Key words: antimony gold mine, ore-controlling factor, genesis of deposit, high density electrical method, Duoguma, North Bayan Har Mountains

CLC Number: 

  • P618.51

Fig.1

Regional geological map"

Fig.2

Geological overview and deployment of high density electrical method in Duoguma survey area"

Fig.3

Cross section of inversion interpretation of high density electrical measurement from line 15 to line 24"

Fig.4

Interpretation diagram of resistivity plane section"

Fig.5

Abnormal projection diagram of charging rate plane section"

Fig.6

Resistivity anomaly trend and inferred fault distribution diagram"

Fig.7

Schematic diagram of geological structure model of Duoguma"

Fig. 8

Plane projection diagram of comprehensive anomaly of resistivity and charging rate"

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