자원환경지질 (Economic and Environmental Geology)

  • 제43권5호
  • /
  • Pages.455-466
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  • 2010
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  • 1225-7281(pISSN)
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  • 2288-7962(eISSN)
대한자원환경지질학회 (The Korean Society of Economic and Environmental Geology)
권호 표지

한국이 탐사 중인 해저광물자원의 희유금속 함량과 의미

Rare Metal Contents and Their Implications of Seabed Mineral Resources Explored by Korea

  • 박상준 (한국해양연구원 심해.해저자원연구부) ;
  • 문재운 (한국해양연구원 심해.해저자원연구부) ;
  • 이경용 (한국해양연구원 심해.해저자원연구부) ;
  • 지상범 (한국해양연구원 심해.해저자원연구부)
  • Pak, Sang-Joon (Deep-sea & Marine Georesources Research Department, Korea Ocean Research & Development Institute) ;
  • Moon, Jai-Woon (Deep-sea & Marine Georesources Research Department, Korea Ocean Research & Development Institute) ;
  • Lee, Kyeong-Yong (Deep-sea & Marine Georesources Research Department, Korea Ocean Research & Development Institute) ;
  • Chi, Sang-Bum (Deep-sea & Marine Georesources Research Department, Korea Ocean Research & Development Institute)
  • 투고 : 2010.10.01
  • 심사 : 2010.10.20
  • 발행 : 2010.10.28
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초록

한국이 현재 탐사하고 있는 해저광물자원의 유형은 망간단괴, 망간각, 다금속황화광체 등으로 구분된다. 망간단괴에 함유되어 있는 주요 희소금속은 Pt로 지각함량 대비 최대 400 배까지 부화되어 있다. 망간단괴의 총 희토류 함량은 0.037~0.302 REO %, 평균 0.12 REO %를 보인다. 망간각의 주요 희소금속은 Te 및 Pt로 각각 10800 배, 150배 정도의 부화량을 보인다. 총 희토류 함량은 0.013-0.387 REO %, 평균 0.18 REO %로 망간단괴 보다 다소 높은 함량을 보인다. 다금속화황광체의 주요 희소금속은 Se 및 In으로 각각 1300 배, 110 배의 높은 부화량을 보이며, 금(0.8~26.3 g/t), 은(0.9~348.0 g/t) 등의 귀금속이 함유된다. 해저광물자원에 함유되어 있는 희유금속은 채광 예상 금속 종인 Co, Ni, Cu 등의 채광 경제성을 높여 줄 것으로 생각되며 첨단산업을 위한 희유금속 확보 차원에서 의미가 있다.

Seabed mineral resources explored by Korea are categorized into major three types of deposit; manganese nodule, manganese crust and polymetallic sulfides. Pt displays high enrichment factors (400, ore/crust ratios) in manganese nodule. Rare earth oxide content in manganese nodule ranges from 0.037 to 0.302 REO % with mean value of 0.12 REO %. Both of Te and Pt are enriched elements in manganese crust, displaying enrichment factors of 10800 and 150, respectively. Rare earth oxide's contents of manganese crust are slightly higher than manganese nodule's (0.013~0.387 REO %, average = 0.18 REO %). Se and In are outstanding rare metals from seabed polymetallic sulfides, showing enrichment factors of 1300 and 110, respectively. Au (0.8~26.3 g/t) and Ag (0.9~348.0 g/t) are another enriched elements in polymetallic sulfides. The main concern at exploiting seabed mineral resource will be a securing rare metals for high-technology industries and rare metals from subsea mineral deposits will add economic values to commodity candidates such like Co, Ni and Cu.

키워드

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