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METALLOGENIC GEOCHEMISTRY OF JIANGNAN-TYPE GOLD DEPOSIT

Liu Yingjun;Ma Dongsheng;Ji Junfeng Department of Earth Sciences, Nanjing University  
By Jiangnan- type gold deposits are meant the stratabound gold depositshosted by the Proterozoic low-grade metasedimentary sequence of Jiangnanancient island arc Belt. They should be classified into the transitional genetictype between metamorphic fluid and infiltrating geothermal water. Their ore-forming materials should mostly come from gold-bearing formations and majormetallogenic energy should be supported by Xuefengian and Caledonian tectonicmovements and the associated geothermal water system. Present paper sumsup their principal geochemical characteristics and advances a comprehensivegenetic model of "source -transportation-concentration" for Jiangnan-type golddeposit.
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