Prospecting of sedimentary-metamorphic type manganese deposits in the Sifangshan area, northeastern Hubei Province: Insight from magnetic anomaly information

• Published in: 地质科技通报 Vol. 41; no. 4; pp. 184 - 196
• Main Authors: Chuan Wang, Wenjie Shi, Jiandong Zhu, Jiangyan Xu, Song Chen, Yanjun Li
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Bulletin of Geological Science and Technology 01.07.2022
• Subjects: high-precision magnetic survey; northeastern hubei province; prospecting; sedimentary-metamorphic manganese deposits; total gradient module
• ISSN: 2096-8523
• DOI: 10.19509/j.cnki.dzkq.2022.0109

In order to systematically study the prospecting of manganese deposits in northeastern Hubei Province, this study focuses on the typical sedimentary-metamorphic manganese deposits in the Sifangshan area. Based on the anomaly information from a high-precision magnetic survey, the spatial coupling relationship between magnetic anomalies and the manganese deposits. Manganese deposits in the Sifangshan area are predominantly layered and quasi-layered within the Huangmailing Formation (Pt3h) of the Neoproterozoic Hong'an Group. The manganese-bearing sedimentary rocks consist of typical terrigenous clastic-carbonate rocks, including volcanic rocks and argillaceous rocks with silty carbonates.Most manganese-bearing rocks corresponding with medium and high-intensity magnetic anomalies measured by the 1∶50 000 magnetic survey, because they contain a small amount of iron oxides such as magnetite. However, some are also located in the gradient zone of positive and negative magnetic anomaly gradient belts. In the total g