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Gold Science and Technology ›› 2016, Vol. 24 ›› Issue (4): 19-25.doi: 10.11872/j.issn.1005-2518.2016.04.019

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The Implications Revelation of Prospecting Tectonic Altered Rock Type Gold Deposits in Jiaodong District：From Mineral-bearing Potentiality of Zhaojia Gold Field

WEI Jianhua1，CHANG Sucai2，JI Guangjian3    

  1. 1.Hebei Shahe Water Supplies Bureau，Shahe   054000，Hebei，China；
    2.No.2 Geological Brigade of Hebei Geology and Mineral Exploration Bureau，Tangshan   063000，Hebei，China；
    3.Hebei Institute of Regional Geology and Mineral Resources Survey，Langfang    065000，Hebei，China
  • Received:2016-06-28 Revised:2016-07-19 Online:2016-08-28 Published:2016-11-17

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Abstract:

In the field of Zhaojia gold mine， there are two types of developing northeast trending fault structure and they are ore-bearing or barren respectively.There are obvious differences between them: The ore-bearing northeast trending structure was formed in the early and medium stage of Yanshan cycle. Although the trend of this fault strike is 30 degrees northeast， it has the wave-like curves (The southern part is turning to the trend of east-west direction). Besides， its dip angle is a bit general (10-20°) and the fault zone is thick. And it has strong silicification， sericitization and pyritization. The quartz vein with different thickness can penetrate the fault zone and associate with gold， silver， lead and zinc mineralization. When they reach the regular grade， they can become ore body.The barren northeast trending structure was formed in the later period of Yanshan cycle (Late Cretaceous).The trend of occurrence is straight and 20 degrees northeast. Its dip angle is a bit steep (Approximately 70°).The fault zone is mainly composed of the crushed cataclasite， crushed rock and fault gouge and does not have obvious alteration and mineralization. Based on the features of the two types of northeast trending fault structure， the ore-bearing potential of northeast trending fault structure across Jiaodong can be evaluated and estimated.This can also offer some implications and suggestions for  gold prospecting in this region.

Key words: Jiaodong district, Zhaojia gold mine, northeast trending fault, ore-bearing structure, post mineralization structure

CLC Number: 

  • P618.51

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