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Open AccessArticle

Deep Mineral Exploration of the Jinchuan Cu–Ni Sulfide Deposit Based on Aeromagnetic, Gravity, and CSAMT Methods

by Jianmin Zhang 1,2, Zhaofa Zeng 1,2,*, Xueyu Zhao 1,2, Jing Li 1,2,*, Yue Zhou 1,2 and Mingxu Gong 1,2
1
College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
2
Key Laboratory of Applied Geophysics, Ministry of Natural Resources of PRC, Changchun 130026, China
*
Authors to whom correspondence should be addressed.
Minerals 2020, 10(2), 168; https://doi.org/10.3390/min10020168
Received: 31 December 2019 / Revised: 9 February 2020 / Accepted: 11 February 2020 / Published: 13 February 2020
(This article belongs to the Special Issue Novel Methods and Applications for Mineral Exploration)
The exploration of deep mineral resources is an important prerequisite for meeting the continuous demand of resources. The geophysical method is one of the most effective means of exploring the deep mineral resources with a large depth and a high resolution. Based on the study of the geological background, petrophysical properties, and aeromagnetic anomaly characteristics of the Jinchuan Cu–Ni sulfide deposit, which is famous throughout the world, this paper uses the widely used gravity, aeromagnetic, and CSAMT (controlled source audio-frequency magnetotellurics) methods with a complementary resolution to reveal the favorable prospecting position. In order to obtain better inversion results, the SL0 norm tight support focusing regularization inversion method is introduced to process the section gravity and aeromagnetic data of the mining area. By combining the results with CSAMT, it is found that the medium-low resistivity, high density, and the high magnetic anomaly areas near the structural belt can nicely correspond with the known ore-bearing rock masses in the mining area. At the same time, according to the geophysical exploration model and geological and physical property data, four favorable ore-forming prospect areas are delineated in the deep part of the known mining area.
Keywords: Jinchuan Cu–Ni sulfide deposit; deep mineral exploration; CSAMT; inversion Jinchuan Cu–Ni sulfide deposit; deep mineral exploration; CSAMT; inversion
MDPI and ACS Style

Zhang, J.; Zeng, Z.; Zhao, X.; Li, J.; Zhou, Y.; Gong, M. Deep Mineral Exploration of the Jinchuan Cu–Ni Sulfide Deposit Based on Aeromagnetic, Gravity, and CSAMT Methods. Minerals 2020, 10, 168.

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