자원환경지질 (Economic and Environmental Geology)
- 제25권3호
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- Pages.283-296
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- 1992
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
금령(金嶺) 및 기구광상(基邱鑛床)의 동광화작용(銅鑛化作用)
The Copper Mineralization of the Keumryeong and Kigu Ore Deposits
- Park, Hee-In (Department of Geological Sciences, Seoul National University) ;
- Seol, Yongkoo (Department of Geological Sciences, Seoul National University)
- 투고 : 1992.06.18
- 발행 : 1992.06.30
초록
The Keumryeong deposits is a low grade copper deposits in which copper minerals form disseminated grains and thin veinlets in felsic volcanics seem to be dacite. Alteration of the volcanics consists mainly pervasive propylitization and silicification. Potassic alteration characterized by biotite developed locally adjacent to southwestern contact of granodiorite body. Principal sulfide minerals in altered zone are mainly pyrite and lesser chalcopyrite. Chalcopyrite content in potassic zone is relatively higher than that of surrounding propylitized zone. Pyrite and chalcopyrite accompanies magnetite, molybdenite, sphalerite, pyrrhotite, arsenopyrite, pentlandite, marcasite, hematite, ilmenite, rutile, bismuthinite and native Bi as disseminations, veinlets and knots. Granodiorite body is propylitized and contains veinlets of pyrite, chalcopyrite and molybdenite. Fluid inclusions in sulfide-bearing quartz veinlets and quartz grains of felsic volcanics and granodiorite in altered zone consist of liquid-rich, vapor-rich,
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