Abstract
With the increasing demand for mineral resources, there is an inevitable trend to carry out deep prospecting in existing old mines to find a second or even third mining space. Deep prospecting is also an affordable and practical way to prolong the lives of mines and provide a sustainable supply of mineral resources. The magnetic survey is arguably the most effective method for iron ore prospecting. In this paper, a high resolution airborne magnetic (HRAM) survey for deep iron prospecting in the Jinling iron ore cluster (JIOC) was carried out in 2018, which renewed the field magnetic data of the JIOC obtained in the 1980s. From previous studies, almost all iron deposits in the JIOC are spatially distributed in the contact zone between the intrusive rocks and the surrounding rocks. The key prospecting areas were inferred by delineating intrusive rock boundaries via boundary enhancement and edge detection methods, and one of the areas was verified by drilling.
Highlights
Accepted: 22 September 2021Iron is the earliest, most widely used and most abundant metallic element found in the world, and, in some ways, probably the most important mineral resource in humankind’s history
Many iron ore deposits have been discovered in the middle and lower reaches of the Yangtze River (MLRYR), North China plate area (NCP), Gangdis, Tangula, Western Tianshan, etc. These findings indicated the direction for a new round of iron ore explorations
The results provide the basis for this high resolution airborne magnetic (HRAM) (Table 1)
Summary
Most widely used and most abundant metallic element found in the world, and, in some ways, probably the most important mineral resource in humankind’s history. Due to the huge demand for iron and steel consumption, the China government proposed in 2004 to carry out deep prospecting in Hebei, Anhui, Shanxi, Shandong, Hubei and other important iron ore producing provinces in the “the Program of Superseding. Many iron ore deposits have been discovered in the middle and lower reaches of the Yangtze River (MLRYR), North China plate area (NCP), Gangdis, Tangula, Western Tianshan, etc. Academy of Geological Sciences (CAGS) of China Geological Survey (CGS) in 2018 to renew the magnetic data of the JIOC for deep iron prospecting. In this survey, a series of aeromagnetic maps, such as aeromagnetic profile maps, aeromagnetic contour maps, aeromagnetic reduced to pole and upward maps, etc. Some deep mineralized zones were inferred and verified by drillings
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