| 福建省铁帽山钼矿床地质、地球化学异常特征与找矿方向研究 |
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| 关键词:porphyry Mo deposit wall rock alteration fault geochemical anomaly exploration targets |
| 基金项目:国家科技支撑计划课题(编号: 2011BAB04B09);教育部新世纪优秀人才支持计划(编号: NCET-09-0710);北京市优秀博士学位论文指导老师科研项目(编号: 20111141501);教育部长江学者和创新团队发展计划项目(编号: IRT0755) |
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| Geological and Geochemical Anomaly Characteristics and Exploration Targets of the Tiemaoshan Molybdenum Deposit in Fujian Province |
| Located in the southwest Fujian geotectogene, the Tiemaoshan molybdenum deposit is a porphyry molybdenum deposit related to Late-Jurassic intrusive bodies. Ore bodies occur within granitic complex which is composed of adamellite, syenogranite, granitic porphyry and minor quartz diorite. Molybdenum ore bodies, dominantly hosted by altered adamellite, are distributed surrounding the granitic porphyry stock at the center of the ore district. Ore bodies are crosscut by the post-metallogenic faults. The intense wall rock alteration shows distinct zoning composed of potassic alteration, quartz-illitization, smectitization and kaolinitization. The quartz-illitization has the most intimate relationship with Mo mineralization. Soil geochemical survey has revealed that the lg Mo has a bimodal frequency distribution. The threshold of Mo could be defined as 12.2×10–6. The principal Mo anomaly shows ring-like distribution, which is spatially coincident with the ore bodies. However, the anomalies of low-medium temperature elements Zn and Ag as well as the high temperature Sn mostly appear outside and inside the ring-like Mo anomaly. Thus, the quartz-illitization and Mo geochemical anomaly could be considered as the most important targets for exploration. Meanwhile, the destruction and crosscutting actions of faults on ore bodies also deserve special attention. |
| LIU He,YAO Jing-jin,REN Hong,LIU Bi-hong.2014.Geological and Geochemical Anomaly Characteristics and Exploration Targets of the Tiemaoshan Molybdenum Deposit in Fujian Province[J].Acta Geoscientica Sinica,35(6):683-692. |
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