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Application of Gold Exploration Using Three-dimensional Resistivity Inversion in Sambo mine  

Park Jong-Oh (Dream Engineering Inc.)
Kim Hee-Joon (Dept. of Environmental Exploration Engineering, Pukyong National University)
Song Moo-Young (Dept. of Earth and Environmental Science, Chungnam National University)
You Young-June (Div. geophysical exploration, Korea Resource Corporation)
Publication Information
The Journal of Engineering Geology / v.15, no.1, 2005 , pp. 19-27 More about this Journal
Abstract
The Sambo mine is located in Hae-je Myeon, Moo-an Gun, Chollanamdo, which consists of host gneiss and rhyolite possessing quartzite veins with other compositions such as gold, silver, and sublimated sulfur. The ore grade estimated from the core was 0.05～10.9g/t or less in gold and 0.05～389g/t or less in silver, indicating a partial mineralization. The purpose of this paper is to understand the subsurface structures and the distribution of mineralized bodies in the Sambo mine using a combined method of Schlumberger, Wenner, and Dipole-di-pole resistivity surveys on the surface and the resistivity tomography survey in boreholes. The result of three-dimensional resistivity inversion showed that the mineralized body is extended to 240m long in the N10°～20°E direction, with 30m wide and 80 m thick from the surface. The low resistivity zones (<1,000ohm-m) determined from the resistivity image were in good agreement with the mineralized bodies and weak zones identified from the logged cores.
Keywords
Sambo mine; sublimated sulfur; 3D Resistivity inversion; mineralized bodies;
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