Economic and Environmental Geology (자원환경지질)
- Volume 31 Issue 4
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- Pages.277-290
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- 1998
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
A Geochemical Study of Gold Skarn Deposits at the Sangdong Mine, Korea
상동광산 금스카른광상의 지구화학적 연구
- Lee, Bu Kyung (Department of Mineral and Mining Engineering, Sangji University) ;
- John, Yong Won (Formerly Department of Mineral and Petroleum Engineering, Seoul National University)
- Received : 1998.03.31
- Published : 1998.08.31
Abstract
The purpose of this research is to investigate the dispersion pattern of gold during skarnization and genesis of gold mineralization in the Sangdong skarn deposits. The Sangdong scheelite orebodies are embedded in the Cambrian Pungchon Limestone and limestone interbedded in the Myobong Slate of the Cambrian age. The tungsten deposits are classified as the Hangingwall Orebody, the Main Orebody and the Footwall Orebody as their stratigraphic locations. Recently, the Sangdong granite of the Cretaceous age (85 Ma) were found by underground exploratory drillings below the orebodies. In geochemisty, the W, Mo, Bi and F concentrations in the granite are significantly higher than those in the Cretaceous granitoids in southern Korea. Highest gold contents are associated with quartz-hornblende skarn in the Main Orebody and pyroxene-hornblende skarn in the Hangingwall Orebody. Also Au contents are closely related to Bi contents. This could be inferred that Au skarns formed from solutions under reduced environment at a temperature of
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