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Spectral Induced Polarization Response Charaterization of Pb-Zn Ore Bodies at the Gagok mine

가곡광산 연-아연 광체의 광대역유도분극 반응 특성

  • Shin, Seungwook (Exploration Geophysics and Mining Engineering Dept., Korea Institute of Geoscience and Mineral Resources) ;
  • Park, Samgyu (Exploration Geophysics and Mining Engineering Dept., Korea Institute of Geoscience and Mineral Resources) ;
  • Shin, Dongbok (Department of Geoenvironmental Sciences, Kongju National University)
  • 신승욱 (한국지질자원연구원 탐사개발연구실) ;
  • 박삼규 (한국지질자원연구원 탐사개발연구실) ;
  • 신동복 (공주대학교 지질환경과학과)
  • Received : 2014.10.28
  • Accepted : 2014.11.24
  • Published : 2014.11.30

Abstract

Gagok Mine, which is skarn deposits, includes sulfide minerals such as sphalerite, galena, chalcopyrite, and pyrrhotite. To explore these minerals, spectral induced polarization (SIP) is relatively effective compared to other geophysical exploration methods because there is a strong IP effect caused by electrode polarization. In the SIP, the chargeability related to sulfide mineral contents and the time constant related to the grain size of the minerals are obtained. For this reason, we aim to compare difference in the mineralized characteristics between two orebodies in the Gagok Mine by using the chargeability and the time constant. For this study, we sampled ores from the south of Wolgok orebody and the north of Sungok orebody. In order to recognize the mineralization characteristics, the metal content of the samples was measured by a potable XRF and the SIP data of the samples were acquired by using a laboratory SIP measurement system. As a result, the metals in the samples such as Pb, Zn, Cu, and Fe were detected by the portable XRF measurement. In particular, the Fe and Zn contents were far higher than the other metals. The Fe and the Zn were caused by the sphalerite and the pyrrhotite through microscopy. The Wolgok orebody had higher sulfide mineral contents than the Sungok orebody and the result corresponded with the chargeability result. However, we considered that the Sungok orebody had a larger sulfide mineral grain size than the Wolgok orebody because the time constant of the Sungok orebody was larger.

Acknowledgement

Grant : 광대역 유도분극을 이용한 정밀 탐광기술 개발

Supported by : 한국에너지기술평가원(KETEP)

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  1. Application of Spectral Induced Polarization Method for Skarn Metallic Deposits Exploration vol.19, pp.4, 2016, https://doi.org/10.7582/GGE.2016.19.4.212