3D electrical structure of porphyry copper deposit: A case study of Shaxi copper deposit

Located in Lu-Zong ore concentration area, middle-lower Yangtze metallogenic belt, ShaXi porphyry copper deposit is a typical hydrothermal deposit. To investigate the distribution of deep ore bodies and spatial characteristics of host structures, an AMT survey was conducted in mining area. Eighteen...

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Bibliographic Details
Published in:Applied geophysics 2012-06, Vol.9 (3), p.270-278
Main Authors: Chen, Xiang-Bin, Lü, Qing-Tian, Yan, Jia-Yong
Format: Article
Language:English
Subjects:
Case studies
Construction
Copper
COPPER RESOURCES
Deposits
Diorite
Earth and Environmental Science
Earth Sciences
ELECTRICAL CONDUCTIVITY
Electrical resistivity
Geophysics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Metal concentrations
MINERAL DEPOSITS
MINING
Porphyry copper
PORPHYRY ORES
QUARTZ
Scientific imaging
Silurian
Spatial distribution
Three dimensional
Three dimensional imaging
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Summary:Located in Lu-Zong ore concentration area, middle-lower Yangtze metallogenic belt, ShaXi porphyry copper deposit is a typical hydrothermal deposit. To investigate the distribution of deep ore bodies and spatial characteristics of host structures, an AMT survey was conducted in mining area. Eighteen pseudo-2D resistivity sections were constructed through careful processing and inversion. These sections clearly show resistivity difference between the Silurian sandstones formation and quartz diorite porphyry and this porphyry copper formation was controlled by the highly resistive anticlines. Using 3D block Kriging interpolation method and 3D visualization techniques, we constructed a detailed 3D resistivity model of quartz diorite porphyry which shows the shape and spatial distribution of deep ore bodies. This case study can serve as a good example for future ore prospecting in and around this mining area.
ISSN:1672-7975
1993-0658
DOI:10.1007/s11770-012-0337-1