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• W2493408953 abstract "전라남도 영암군에 위치하고 있는 은적 및 상은 금은광상은 백악기의 유문암질 응회암의 열극을 충진한 맥상광체로 구성되어 있다. 은적광산은 유문암질응회암내열극을 충진한 3개조의 함 금은 열수 석영 맥이 발달하고 있다. 은적, 상은광산의 주요 광석광물로는 유비철석, 황철석, 황동석, 섬아연석, 방연석 등이 확인되었고, 일부 엘렉트럼과 자연은, 휘은석이 산출되고 있다. 광화작용과 관련된 열수변질작용은 견운모화작용이 지배적이며, 녹니석화작용 및 딕카이트화 작용이 관찰된다. 은적, 상은광산 일대의 석영맥은 brecciated, crustiform, comb, open vuggy 조직과 관련된 공생 광물군을 보여주고 있는데, 이는 두 광상의 광화작용이 전형적인 천열수 환경에서 형성되었음을 지시해 주고 있다. 또한, 상은 및 은적 광산에서 산출되는 광석시료를 대상으로 광물자원의 부존특성을 규명하고 광종에 따른 광산별 예비 재평가를 수행하기 위하여 범용자원으로서 Pb, Zn, Cu, Fe, Mo, W, Au, U와 산업원료자원으로서 In, Re, Ga, Ge, Se, Te, Y, Eu, Sm 함량을 분석했다. 예비연구결과, 철, 연, 아연, 동, 텅스텐, 우라늄을 대상으로 개발할 가치가 있는 광상은 없는 것으로 잠정적으로 사료되며, 몰리브덴과 은의 경우 정밀탐광을 통한 매장량이 확보되면 국제적 가격추이에 따라 경제적으로 개발할 가치가 있는 것으로 잠정적으로 사료된다. 맥폭을 0.25m부터 변질대를 포함한 최대 2m까지 적용하고, 금품위를 80 g/t로 적용할 경우, 상은 및 은적광산의 자원량은 6.5톤부터 65톤까지 산출될 수 있다. 그러나, 상은-은적광산의 맥 구조가 변질대와 같이 발달하고 있어 개발 가능한 변질대를 포함한 평균 품위의 산출이 되어야 하며, 변질대를 포함한 평균 품위에 따라 매장량이 달라질 수 있어 향후 많은 탐사가 수행되어야 한다. 【Gold and silver deposits within the Eunjeok and Sangeun mines are located in Yeongam district, Cheollanamdo-province. They are composed of vein ore bodies infilling the fractures of Cretaceous rhyolitic tuff. The Eunjeok mine have three gold and silver bearing hydrothermal veins which is infilling the fracture of rhyolitic tuff. Major ore minerals within the Eunjeok and Sangeun mines are arsenopyrite, pyrite, chalcopyrite, sphalerite and galena and minor ores are electrum, native silver and argentite. Sericitization is dominant in alteration zone and chloritization and dickitization is minor. Quartz veins in the Eunjeok and Sangeun mine have the similar paragenesis and vein textures such like breccia, crustiform, comb and vuggy morphology indicating the formation of typical epithermal environment. In order to carry out the preliminary feasibility study of mine according to the commodity and elucidate the occurrence features of mineral resources from Eunjeok and Sangeun mine, common commodity (Pb, Zn, Cu, Fe, Mo, W, Au and U), and industrial commodity (In, Re, Ga, Ge, Se, Te, Y, Eu and Sm) for 17 ore specimen were analyzed. It is tentatively thought that there is no exploitable mine for iron, lead, zinc, copper, tungsten and uranium based on the preliminary result. If the reserves are secured through the detailed prospecting in case of molybdenum and silver, it is tentatively thought that there will be exploitable deposits depending on international metal price. If we assume the vein width from 0.25 m to 2 m including alteration zone with the gold grade of 80g/t, it is inferred that the resources amount of the Eunjeok-Sangeun mines range from 6.5 to 65ton. However, as the vein structure of the Eunjeok and Sangeun mines is developed together with alteration zone, it should be estimated to include potential alteration zone in order to yield the average grade. It is needed to carry out more exploration in the near future because the reserves can be flexibly estimated according to the change of average grade considering the alteration zone.】" @default.
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• W2493408953 date "2010-01-01" @default.
• W2493408953 modified "2023-09-28" @default.
• W2493408953 title "전남 영암지역 광상 재평가: 은적.상은 광산를 중심으로" @default.
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