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《Journal of Glaciology and Geocryology》 2004-02
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Weathering Crust and Placer Gold in ColdRegion of Northeast China

CHENG Fei~(1), ZHANG Hai-xin~(2), YU You~(2), XU Gui-hua~(2), LIU Xi-xin~(2), QI Chang-mou~(1)(1. Jilin University, Changchun Jilin130061, China; 2. Heilongjiang Nonferrous Metal GeologicalExploration Bureau, Harbin Heilongjiang150046, China)  
There are three placer gold enrichment zones in the north of Da Hinggan and Xiao Hinggan ranges. Geological Exploration show that there is no relation between the placer gold deposit and endogenetic minerialization, The placer gold have a close relation with crust of weathering in this area. Low temperature geochemistry in crust of weathering play important role on the formation of placer gold in this area. In the past period, the cold climatecondition is an important for the placer gold , the cold climatecondition have advantage for preserve of the crust of weathering, In the frost condition, the hydrology of cold regionand electrochemical have a advantage for the gold migration and enrichment. The sulphide plays an important role on gold oxidation and reduction.
【CateGory Index】: P618.51
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