ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Petrology
Volume 13 - 2025 | doi: 10.3389/feart.2025.1567728
This article is part of the Research TopicGenetic Mineralogy in Magmatic Hydrothermal Deposits: Methodology and ApplicationView all 6 articles
The controlling factors of the metallogenic intensity of Han-Xing type skarn iron deposit: Insights from trace elements of magmatic magnetite
Provisionally accepted
- 1College of Earth and Planetary Sciences, Chengdu University of Technology, Chengdu 610059, China, Chengdu, China
- 2Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, China
- 3MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Natural Resources, Beijing, China
- 4School of Earth Sciences, Hebei GEO University, Shijiazhuang, Hebei Province, China
- 5Key Laboratory of Strategic Critical Mineral Resources, Hebei GEO University, Shijiazhuang, Hebei Province, China
- 6Shandong Provincial No.4 Institute of Geological and Mineral Survey, Weifang 261021, China, Shandong, China
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The Handan-Xingtai region is one of the important production areas of skarn-type iron deposits in China. The magmatic rocks associated with iron mineralization in this region are predominantly intermediate-basic and intermediate-felsic in composition, and different intrusive complexes exhibit distinct metallogenic intensity. This study focuses on the major and trace element geochemical analysis of magnetite in the Kuangshan and Fushan complexes to explore the controlling factors of the metallogenic intensity of Han-Xing type skarn iron deposit. Through PLS-DA and OPLS-DA, it is found that magnetite in the Kuangshan complex is enriched in Ti, Si, Cu, and Mn, but depleted in V, Cr, Ni, Co, Ga, Al, and Mg. In contrast, magnetite in Fushan complex is characterized by high concentrations of Co, Ni, Cr, and V.The results of mineral geochemical indicate that the Kuangshan complex has experienced plagioclase fractional crystallization and formed in a low-temperature, high-oxygen fugacity environment, which was formed by cognate magma through crystallization differentiation. The Fushan complex is the product of non-cognate magma evolution, and formed in a low-oxygen fugacity environment. Therefore, the chemical composition of magnetite can serve as an effective tool for studying the enrichment mechanism of skarn type iron deposits. At the same time, high fO2 environment is conducive to the precipitation and migration of Co from magnetite, which is more favorable for the formation of associated Co deposits during the later sulfide stage.
Keywords: Magnetite, Magma evolution, oxygen fugacity, Handan-Xingtai area, PLS-DA & OPLS-DA
Received: 28 Jan 2025; Accepted: 30 Jun 2025.
Copyright: © 2025 JIN, Wang, Zhang and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Denghong Wang, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037, China
Juquan Zhang, School of Earth Sciences, Hebei GEO University, Shijiazhuang, 050020, Hebei Province, China
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