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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (3): 19-27.doi: 10.11872/j.issn.1005-2518.2017.03.019

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Breakthrough and Significance of Exploration at Depth More than 1 000 m in Jiaojia Metallogenic Belt，Jiaodong：A Case of #br# Shaling Mining Area

SONG Guozheng1，YAN Chunming1，CAO Jia2，GUO Zhifeng1，BAO Zhongyi1，LIU Guodong1，LI Shan1，FAN Jiameng1，LIU Caijie1   

  1. 1.6th Geology & Mineral Resources Survey Institute，Shandong，Zhaoyuan   265400，Shandong，China；
    2.Shandong Provincial Bureau of Geology & Mineral Resources，Jinan   250013，Shandong，China
  • Received:2017-03-06 Revised:2016-04-28 Online:2017-06-30 Published:2017-09-11

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Abstract:

The breakthrough of deep prospecting of depth more than 1000 m in the Shaling mining area is the organic combination of scientific prediction and brave exploration.According to geophysical，“ladder-type” metallogenic theory，trend extrapolation  and spatial distribution of ore body，three deep mineralization targets have been predicted in Shaling mining area.Then target  verification and exploration work are completed in three stages following the principle of “overall deployment，phased implementation”  and“studying and adjustment should be take in the process of project implementation”.There has a great breakthrough in deep exploration：77 industrial orebodies increased the amount of gold by 389 t and the single ore resources of No.Ⅰ-2 main ore body is more than 300 t，whose ore bearing elevation is -940~ -2 030 m，the maximum length of orebody trend is 1 680 m，the maximum inclination is 2 180 m，the maximum control vertical depth is 1 039 m，and thickness is 1.16~125.64 m.In conclusion，Shaling gold deposit occurs in the footwall of Jiaojia fault，the vertical distance of the continuous extension of the main orebody and its adjacent mining area is more than 2 km，much deeper than mineralization depth of the epithermal gold deposit，indicating the metallogenic environment of Jiaodong type gold deposit and epithermal deposit is obviously different，and the prospecting potential of Jiaodong type gold deposit is huge.Further analysis shows that Qianchen-Shangyangjia prediction area and Zhaoxian prediction area still have a good prospecting potential.

Key words: Shaling mining area, super-large gold deposit, deep prospecting, target area selection, depth more than 1 000 m, Jiaojia metallogenic belt, Jiaodong type gold deposit

CLC Number: 

  • P618.51

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