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STUDY ON THE ORE-FORMING MATERIAL SOURCE OF SIWUMUCHANG GOLD DEPOSIT IN INNER MONGOLIA |
YANG Cai, GUO Gen-wan, GUO Wan-liang, XU Guo |
Inner Mongolian Institute of Geological Survey, Hohhot 010020, China |
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Abstract Based on the characteristics of S, Pb, O and C isotope in the Siwumuchang gold deposit in Inner Mongolia, the ore-forming material resource is analyzed. It is concluded that the S in metallic sulfides comes from the volcanic rock basin of Paleozoic marine bed. The Pb is provided by host strata and volcanic rock basin. In mineralization period, the ore-forming fluid is mainly derived from magma, with meteoric water mixed after the mineralization. The mineralization period of the Siwumuchang gold deposit ranges from Late Jurassic to Early Cretaceous.
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Received: 03 December 2007
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