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| GEOLOGY AND GENESIS OF LAOCHANG Ag-Cu-Pb-Zn POLYMETALLIC ORE DEPOSIT IN LANCANG YUNNAN PROVINCE |
| WANG Xin-li1, PANG Yan-chun1, HUANG Mu-lian2, SUN Lin-xun3, LI Wei4 |
1. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China;
2. Huabei Oil Field Company, PetroChina, Renqiu 062552, Hebei Province, China;
3. Liaohe Oil Field Company, PetroChina, Panjin 124000, Liaoning Province, China;
4. Sichuan Geological Survey, Chengdu 610059, China |
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Abstract The Laochang Pb-Zn deposit in Lancang, Yunnan Province is an important polymetallic ore deposit in the Sanjiang area in Southwest China. Based on a comprehensive analysis on the geological characteristics of the deposit, its origin is considered to be closely related with volcano-eruption sedimentation metallogenesis and post-volcanic exhalative hydrothermal reformation metallogenesis. The metallogenic fluid is the mixture of magmatic water and meteoric or sea water. The source of ore materials is crust-mantle mixture.
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Received: 29 March 2006
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2006, Vol. 15 
