Geophysics and Geophysical Exploration (지구물리와물리탐사)

Korean Society of Earth and Exploration Geophysicists (한국지구물리·물리탐사학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Characteristics of W-Mo Ore Deposit in Bayan-Onjuul, Mongolia Using Magnetic Data

자력자료를 이용한 몽골 바얀온줄 텅스텐-몰리브덴 광화대 특성 연구

  • Park, Gyesoon (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Bum Han (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, In-Joon (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Heo, Chul-Ho (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
  • 박계순 (한국지질자원연구원 광물자원연구본부) ;
  • 이범한 (한국지질자원연구원 광물자원연구본부) ;
  • 김인준 (한국지질자원연구원 광물자원연구본부) ;
  • 허철호 (한국지질자원연구원 광물자원연구본부)
  • Received : 2014.09.18
  • Accepted : 2014.11.20
  • Published : 2014.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

KIGAM (Korea Institute of Geoscience and Mineral Resources) and MRAM (Mineral Resources Authority of Mongolia) performed joint survey on Bayan-Onjuul W-Mo mineralized area. Following the survey, we carried out magnetic survey. W-Mo occurrences are located with keeping a certain distance from the northern boundary of granite which has higher magnetic susceptibility values. Also, the 3D imaging results of magnetic inversion show that granite bodies are extended to the W-Mo occurrence areas from the deep main body with decreasing of susceptibility. The results of magnetic data analysis are well matched with the general characteristics of ore solution involved with W mineralization. The further study about the hidden ore deposits which have similar spatial relationship between granite and known WMo occurrences are necessary to improve the economic feasibility.

한국지질자원연구원은 몽골 광물자원청과 공동으로 몽골 항가이 희유금속 광화대내 바얀온줄 지역의 W-Mo (텅스텐-몰리브덴) 광화대 지질조사를 수행하였으며, 이의 일환으로 육상 자력 탐사를 수행하였다. W-Mo 산출지들은 주변보다 높은 자기감수율 값을 갖는 화강암의 북쪽 경계를 따라 일정 거리를 두고 나타나고 있다. 또한 자력 역산을 통해 구축된 3차원 영상화 결과를 보면 화강암체가 심부 중심에서 지표 W-Mo 산출지 쪽으로 자기감수율 값이 감소하며 연장되고 있는 것으로 해석된다. 이는 W 광화작용에 관여하는 광화용액의 일반적인 특성과 잘 부합되는 결과로 자력탐사 자료를 통한 타당성 높은 광화대 특성 분석 결과로 판단된다. 지표 광체 산출지와 유사한 공간적 상관성을 갖는 지역에 대한 정밀 조사를 통해 잠두광체를 확보하고 경제성을 높이는 추가 연구가 필요할 것이다.

Keywords

References

  1. Almeida, A. S., and Journel, A. G., 1994, Joint simulation of multiple variables with a Markov-type coregionalization model. Mathematical Geology, 26(5), 565-588. https://doi.org/10.1007/BF02089242
  2. Dejidmaa, G., Bujinlkham, B., Eviihuu, A. Enkhtuya, B., Ganbaatar, T., Moenkh-Erdene, N., and Oyuntuya, N., 2001, Distribution Map of Deposits, and Occurrences in Mongolia (at the Scale 1:1,000,000). Mineral Resources Authority of Mongolia, Ulaanbaatar, Mongolia, 280p.
  3. Fullagar, P. K., Pears, G. A., Hutton, D., and Thompson, A., 2004, 3D gravity and aeromagnetic inversion, Pillara region, W.A. Exploration Geophysics, 35, 142-146. https://doi.org/10.1071/EG04142
  4. Goovarets, P., 1997, Geostatistics for Natural Resources Evaluation. Oxford University Press, New York, USA, 483p.
  5. Jo, J. H., and Choi, S. H., 2013, Evolution of Hydrothermal Fluids at Daehwa Mo-W Deposit. Econ. Environ. Geol., 46(1), 11-19. (in Korean) https://doi.org/10.9719/EEG.2013.46.1.11
  6. Korea Institute of Geoscience and Mineral Resources (KIGAM), 2013, Resource estimation and Exploration of Overseas Mineral Resources. Ministry of Science, ICT and Future Planning, GP2013-007-2013(I). (in Korean)
  7. Min, K. D., Suh, J. H., and Kwon, B. D., 1987, Applied Geophysics. Woo-Sung press. Seoul, Korea, pp. 142-145. (in Korean)
  8. Yang, K., and Kim, J., 1999, Hydrothermal alterations and Hydrothermal Fluids of the Ilkwang Cu-W Breccia-pipe Deposit, southeastern Kyongsang Basin. Jour. Korean Earth Science Society, 20(2), 179-188. (in Korean)