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Laumontitization as an Exploration Indicator of Epithermal Gold Deposits: A Case Study of the Axi and Other Epithermal Systems in West Tianshan, China

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【作者】 陈衍鲍景新张增杰陈华勇刘玉琳

【Author】 CHEN Yanjing \+\{1,2)\}, BAO Jingxin \+\{1)\}, ZHANG Zengjie \+\{1)\}, CHEN Huayong \+\{2)\}, and LIU Yulin \+\{1)\} 1) (Departmemt of Geology, Peking University, Beijing 100871) 2) (Guiyang Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002)

【机构】 Departmemt of GeologyPeking UniversityGuiyang Institute of GeochemistryChinese Academy of SciencesPeking University Beijing 100871 Guiyang Institute of GeochemistryGuiyang 550002Beijing 100871Beijing 100871

【Abstract】 In the light of field investigation, microscopic study, X\|ray phase analysis and mineral infrared spectral analysis, it is considered that laumontitization is of extensive occurrence in the Axi gold orefield. The development of laumontitization and its relationship to mineralization show that the laumontitization appeared mainly at the top of and in the periphery of orebodies, and occurred at the edge of the epithermal system or at the late stage of epithermal system evolution. Therefore, laumontitization can be used as an exploration indicator of epithermal gold deposits. The fluids responsible for laumontitization in the Axi gold orefield are similar to those producing hot spring\|type gold deposits or those from modern geothermal fields. Epithermal mineralization of the Axi gold deposit was dated at Carboniferous, indicating that the West Tianshan of China is a region favorable to epithermal\|type gold mineralization and preservation. Hence the West Tianshan of China is a target area for exploring epithermal gold deposits.

【基金】 TheresearchwasfinanciallygrantedbyNNSFC (4 96 72 1 1 9) ;MSTC (Nos.96 Yu39\|0 4 ;96 91 5 0 3 0 5 ) ;EMC (No .0 1 0 0 5andTrans CenturyTeacherProgram)aswellasGuiyangInstituteofGeochemistry ;ChineseAcademyofSciences.
  • 【文献出处】 Chinese Journal of Geochemistry ,中国地球化学学报(英文版) , 编辑部邮箱 ,2003年04期
  • 【分类号】P618.51
  • 【被引频次】11
  • 【下载频次】59
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