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| The petrophysical characteristics of the Heishan copper-nickel sulfide ore district in the Beishan metallogenic belt and their prospecting significance |
| GUO You-Zhao1, 2, ZHANG Zhen-Hai1, 2, ZHANG Jie1, 2, LI Lei1, 2 |
1.Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;
2.State Research Center of Modern Geological Exploration Engineering Technology,Langfang 065000,China |
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Abstract Based on physical property parameter measurements of main rock and ore specimens from 161 surface samples and 1 134 drilling core samples in the Heishan copper-nickel ore district, the authors found that the mineralized rock body, rock body and wall rock strata all exhibit obvious differences in density, magnetic susceptibility, residual magnetization and polarizability, thus possessing favorable prerequisite for geophysical exploration. The study based on physical property difference degrees of mineralized rock body, rock body and wall rock strata and capability for forming anomalies has the following meaning: Massive high magnetic anomaly and high gravity anomaly delineated by large-scale high-precision gravity-magnetic regional sweeping survey might indicate the existence of mafic-ultramafic rock body; If large-scale IP, resistivity and magnetic survey is carried out in such a massive gravity and magnetic area and massive or pipe-like anomaly whose polarizability is higher than 10%, low resistivity anomaly in the high resistivity anomaly, relatively high or higher magnetic anomaly and gravity anomaly, the rock body in this area might have been mineralized.
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Received: 10 June 2016
Published: 20 August 2017
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