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现代矿业 ›› 2025, Vol. 41 ›› Issue (08): 183-188.

• 地质·测量 • 上一篇    下一篇

歙县仰坦地区铜多金属矿成矿地质特征及找矿方向

罗朝平 梁海辉 胡佳伟   

  1. 华东冶金地质勘查局物探队
  • 出版日期:2025-08-25 发布日期:2025-09-28

Geological Characteristics of Mineralization and Prospecting Direction of Copper Polymetallic Ore in Yangtan Area of Shexian County

  1. East China Metallurgical Geological Prospecting Bureau of Geophysical Prospecting Team
  • Online:2025-08-25 Published:2025-09-28

摘要: 歙县仰坦地区位于钦(州)—杭(州)成矿带东段北部,是铜、锡、钨、钽铌、铀、金、银、铅锌 等金属和非金属成矿带,褶皱、断裂构造、岩浆岩活动强烈,并发育有蓝田组、休宁组、荷塘组等成矿 有利地层,成矿潜力较好。在以往地质勘查工作中,研究区内已发现2处铜多金属矿化体,主要赋存 于休宁组上段矽卡岩蚀变带及荷塘组破碎带内,地表矿化追索控制发现其矿化规模有限,但可指明 下一步找矿方向。通过综合分析区内地质、物化探异常特征,开展岩矿鉴定及岩体测年工作,分析矿 化与区内地层、构造及岩浆岩活动关系,总结成矿规律,综合认为:研究区内蓝田组、荷塘组、休宁组 等元素高丰度地层为成矿提供了有效物质来源,极为发育的褶皱构造为成矿提供了良好的赋矿空 间,北东向、北西向及南北向多组断裂构造为深部岩浆热液提供良好运移通道,最终在岩体与有利围 岩、褶皱与断裂构造叠加部位富集成矿。研究指出了区内下一步找矿方向,以期实现找矿突破。

关键词: 地质特征, 找矿方向, 铜多金属矿

Abstract: The Yangtan area of Shexian County is located in the northern part of the eastern section of the Qinzhou-Hangzhou mineralization belt. It is a mineralization belt of metals and non-metals such as cop‐ per,tin,tungsten,tantalum and niobium,uranium,gold,silver,lead and zinc. The folding,fault struc‐ tures and magmatic rock activities are intense. It has also developed favorable mineralization strata such as the Lantian Formation,Xiuning Formation and Hetang Formation,and has good mineralization potential. In previous geological exploration work,two copper polymetallic mineralized bodies have been discovered in the study area,mainly located in the upper section of the skarn alteration zone of the Xiuning Formation and the fractured zone of the Hetang Formation. Surface mineralization tracing control has found that the scale of mineralization is limited,but it can point out the direction for the next mineral exploration. By comprehen‐ sively analyzing the geological and physicochemical exploration anomaly characteristics in the area,con‐ ducting rock and mineral identification and rock mass dating work,analyzing the relationship between min‐ eralization and the strata,structures and magmatic rock activities in the area,summarizing the mineraliza‐ tion laws,it is comprehensively concluded that: The high-abundance elemental strata such as the Lantian Formation,Hetang Formation and Xiuning Formation in the study area provide effective material sources for mineralization. The highly developed fold structures offer favorable space for mineralization. Multiple sets of fault structures in the northeast,northwest and north-south directions provide good migration channels for deep magmatic hydrothermal fluids. Eventually,mineralization is enriched at the superposition of rock mass‐es and favorable surrounding rocks,as well as at the folds and fault structures. The research pointed out the next direction for mineral exploration in the area,with the aim of achieving a breakthrough in mineral explo‐ ration.

Key words: geological characteristics, prospecting direction, copper polymetallic ore