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Prediction of Hidden Ore Bodies using Integrated Geology,source of fluids and Stratagem EH4 Geophysical Survey in Kuoerzhenkuola Gold Deposit in Xinjiang,China

Prediction of Hidden Ore Bodies using Integrated Geology,Sou...

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中国科学院地质与地球物理研究所2008学术年会

作者： Ping SHEN,Yuanchao SHEN,Tiebing LIU,Heping ZHU,Lijuan WANG, Qingdong ZENG and Guangming LI Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China

The Kuoerzhenkuola gold deposit is located in the Sawur gold belt in Xinjiang,*** integrated geological, geochemical and geophysical investigation was carried out in the Kuoerzhenkuola gold deposit,to determine the extension of the principal mineralized system,in the search for new ***-examination of the rocks and structures in the Kuoerzhenkuola area showed that the study area features an elliptical caldera where the gold deposit lies.A re-investigation of the mine geology found that the mineralization at the Kuoerzhenkuola gold deposit is not controlled by the EW-striking regional fault as previously assumed,but by a caldera fracture system locally superimposed by regional faults;the host rocks are andesites and dacites of the Carboniferous Heishantou Group rather than the crypto-explosive breccia of the Devonian Sawurshan *** components of fluid inclusions from quartz,trace element chemistry of pyrite and fluid inclusions in pyrite,Pb isotopes of pyrite,and whole-rock geochemistry and Pb isotopes of the country rocks are used to study the source of fluids at Kuoerzhenkuola gold *** ore-forming fluids are characterized by low-moderate temperatures and low salinities estimated from fluid inclusion *** mass spectrometry indicated a CO-bearing *** coupled plasma-mass spectrometry of the fluid inclusions indicated high Cu (average 70 ppm) for the Au mineralization,whereas the host rocks have low Cu(average 33 ppm),indicating that Cu of the ore-forming fluids originated from magmatic fluid rather than the volcanic *** isotopes of ores and host volcanic rocks indicate a similar,mixed source and some Pb could be sourced from the *** implied that magmatic fluids could play an important role in the Au mineralization *** new geological findings and the fluids derived mainly from the magmatic fluids suggest that the ore-forming fluids originate at depth,and are transported and precipi

关键词： gold mineralization prediction of hidden ore bodies source of fluids Stratagem EH4 Xinjiang.

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