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Magnetic Data Analysis of the Chromium Mineralized Belt in Bophi Vum area, Northwestern Myanmar

미얀마 북서부 보피붐 크롬광화대의 자력 탐사자료 해석

  • Park, Gyesoon (Mineral Resources Department, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Heo, Chul-Ho (Mineral Resources Department, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
  • 박계순 (한국지질자원연구원 광물자원연구본부 광물자원연구실) ;
  • 허철호 (한국지질자원연구원 광물자원연구본부 광물자원연구실)
  • Received : 2014.07.10
  • Accepted : 2014.08.26
  • Published : 2014.08.31

Abstract

For analyzing the distribution of chromite, magnetic survey was carried out on the chromium mineralized belt in Bophi Vum area, northwestern Myanmar. As a result, the magnetic susceptibility of chromite is lower than those of dunite and harzburgite, which are background rocks of chromite. Also, the locations of low magnetic anomaly zone and low magnetic susceptibility models of 3D magnetic inversion result are spatially well matched with those of chromite occurrences confirmed by the surface geological survey and trench survey. Some of low magnetic effects are expanded to the periphery area of chromite occurrences. Considering the magnetic susceptibility characteristics of various rocks in this area, the expanded low magnetic anomaly zones are estimated as the high potential areas bearing chromite. For confirming the potential area of chromite pointed by coarse magnetic survey, the additional detail exploration need to be carried out in future.

보피붐 지역의 크롬철석 분포 특성 확인을 위해 자력 탐사를 수행하였다. 지표 암석 샘플 조사에서 크롬철석은 주변부에 분포하는 하즈버자이트와 더나이트에 비해 낮은 자기감수율 값을 나타내었다. 자력 탐사 결과, 낮은 자력 이상대 지역과 지표 지질 조사 결과를 통해 확인된 크롬철석 산출지 영역이 잘 부합하고 있으며, 3차원 역산 해석 결과의 저 자기감수율 모델과도 공간적으로 잘 부합하고 있다. 일부 지역에서 지표 조사를 통해 확인된 크롬철석 산출지에서 주변부로 확장되는 저 자력 이상대가 나타나는 것으로 확인되었으며, 이 지역의 자기감수율 분포 특성을 고려하면 이 지역에서 추가적인 광체 확보가 가능할 것으로 해석된다. 추후 이 지역에 대한 정밀 조사가 필요할 것으로 판단된다.

Keywords

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Cited by

  1. Geological Structure and Mineralization in the Vophi Bum Cr Mineralized Zone, NW Myanmar vol.24, pp.4, 2015, https://doi.org/10.7854/JPSK.2015.24.4.307