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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (2): 23-31.doi: 10.11872/j.issn.1005-2518.2017.02.023

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Discussion on the Geochemistry Characteristics and Genesis of Xiahaoping Gold Deposit in Song County，Henan Province

QIN Junqiang1，DONG Wenchao2，NIE Huaiyue1，PANG Kaiyuan3   

  1. 1.No.2 Institute of Geological & Mineral Resources Survey of Henan，Zhengzhou    450002，Henan，China；
    2.Institute of Resources and Environment，Henan Polytechnic University，Jiaozuo    454000，Henan，China；
    3.Zhenping Nonferrous Metal Mining Co.，Ltd.，Henan Luoyang Mining Group，Zhenping    474250，Henan，China
  • Received:2016-09-01 Revised:2017-02-14 Online:2017-04-28 Published:2017-05-12

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Abstract:

The south of Xiahaoping gold deposit is regional faults and late Yanshan granite，and the west of Xiahaoping gold deposit is medium hydrothermal breccia pipe gold deposit of Dianfang.The developing of the gold deposit area are structure and vein rock.Mineralization geological condition is favorable.The rare earth element analysis results show that the sample has a high total amount of rare earth.The average value of rare earth ore is 207.7×10-6.LREE/HREE is from 6.81 to 14.19，which indicates that the light rare earth is enrich，and the light rare earth and the heavy rare earth are obvious difference.The δEu of gold ore is from 0.49 to 1.37，which changes in the between loss and enrichment of two endmembers.From Heyu multistage granite→Gold ore→Explosive breccia，the total amount of rare earth increases gradually，which implies that the influence of ore-forming hydrothermal fluids on magmatic rocks.The results of the trace element analysis show that sulfophilic elements are enrich highly，such as Au，Pb，Cd，Bi，Ag，Cu，As，Zn，which reflects the metallogenic environment of sulfur rich reduction.The characteristics of Pb isotope in pyrite show that the source of material is single，and isotope index is very close to period granite of Yanshan.Mineralization time of the deposit was 129±45 Ma，it is closed to the era of Heyu rock，which implies that there is a genetic relationship with granite.

Key words: geochemical characteristics, genesis, Xiahaoping gold deposit, Song County, Henan Province

CLC Number: 

  • P618.51

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