Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (6): 1879-1885.doi: 10.13278/j.cnki.jjuese.201506306

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Mechanism of Geoelectrochemical Extraction from Dagenlong Tungsten Deposit in Hunan

Ouyang Fei1,2, Luo Xianrong2, Fu Lichun3   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
    2. Guangxi Key Laboratory of Concealed Metallic Ore Deposit Exploration/Research Institute of Concealed Deposit Forecast, Guilin University of Technology, Guilin 541004, Guangxi, China;
    3. Heilongjiang General Prospecting Institute of Geological Exploration, Harbin 150046, China
  • Received:2015-03-01 Published:2015-11-26

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Abstract:

In order to discover the mechanism and anomaly origin of geoelectrochemical extraction, an experimental study has already been conducted in Dagenlong Tungsten deposit in Hunan. We take soil samples by interval of 20 m, and implement the geoelectrochemical extraction under the working conditions of the following three: the extracting time is 24 hours, the dose of HNO3 is 1 000 mL, and the distance between two electrodes is 50 cm. The result shows that the variation of metal element content is insignificant in soil after extracting, and the extracted metal elements are proportional to the whole metal in the soil. The morphology comparison of anomaly between the geoelectrochemical extraction and the secondary halo shows that Ni and Co is clear, W is less, and Cr has no anomaly. The characteristics of anomaly mainly depend on the content proportion of element which is active in soil. Comprehensive analysis shows that the anomalies of geoelectrochemical extraction related to the relative position of the ore body. It is easy to form anomaly at downhill position, and distance too close to native ore body have obvious interference to anomaly. In this ore deposit area, the higher weathering degree, the better Co,Ni anomaly of geoelectrochemical extraction. The anomaly width of geoelectrochemical extraction is smaller than secondary halo.

Key words: geoelectrochemical extraction, tungsten deposit, Dagenlong in Hunan Province, characteristics of anomalies

CLC Number: 

  • P632.1

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