Economic and Environmental Geology (자원환경지질)
- Volume 19 Issue spc
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- Pages.103-112
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- 1986
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
Geology and Ore Deposits of Geoje Dong-A Mine
거제(巨濟) 동아광산(東亞鑛山)의 지질(地質) 및 광상(鑛床)
Abstract
The geology of the mine consists of Cretaceous lower andesitic breccia member, tuffaceous black shale, upper tuffaceous sandstone member and andesitic dike. Ore bodies are two parallel veins of breccia originated from hydrothermal activity of later acidic igneous intrusion. First two periods of mineralization, gold and silver, and copper, and later copper enrichment was identified. The first two might have been occurred during boiling of hydrothermal solution that formed breccia and copper enrichment was accomplished by enhancement of
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