Economic and Environmental Geology (자원환경지질)
- Volume 18 Issue 2
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- Pages.107-124
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- 1985
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
Copper Mineralization at Haman-Gunbuk Mining District, Kyeongnam Area
경남(慶南) 함안(咸安)-군북지역(郡北地域)의 동광화작용(銅鑛化作用)에 관(關)한 연구(硏究)
Abstract
More than fifty copper veins are emplaced around late Cretaceous granitoid stock in Haman-Gunbuk district, southernmost part of Korea. These veins cut both late Cretaceous granitoids and hornfels of Jindong formation which is intruded by the granitoids. The paragenesis of veins is nearly the same, consisting of (1) an early vein stage in which most iron oxide minerals, tourmaline and other silitcate minerals were deposited, (2) a calcite and quartz with base·metal sulfide stage and (3) late vein lets of barren calcite stage. Fluid inclusion studies reveal highly systematic trends of salinity and temperature during mineralization. Ore fluids of early vein stage were complex NaCl-KCl rich brines. Salinities of polyphase inclusions in quartz and scapolite in thie stage reached up to 72 wt.% and gradually decreased to 10.5wt. % in closing stage. Homogenization temperatures of inclusions in the beginning of this stage were up to
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