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MINERALIZATION AGE OF THE SIGNIFICANT LEAD-ZINC POLYMETAL AND MOLYBDENUM DEPOSITS IN SOUTHEASTERN XIAOXINGANLING METALLOGENIC BELT |
SHAO Jun, YANG Hong-zhi, JIA Bin, PENG Ming-sheng |
Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China |
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Abstract The southeast of Xiaoxinganling metallogenic belt is one of the significant concentration areas for Pb-Zn polymetal and Mo metallogenesis in Northeast China. The mineralization is closely related to the intrusion of granitic magma. The Pb-Zn deposits genetically belong to skarn polymetal ore type; while the Mo deposits, porphyry type. The zircon U-Pb dating for typical deposits shows that the Pb-Zn mineralization ages range between 175.8 and 209 Ma; while the Mo mineralization, 176±4 Ma. It is thus suggested that the Pb-Zn mineralization age is Late Indosinian-Early Yanshanian, and Mo mineralization is Early Yanshanian.
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Received: 08 February 2013
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