刘文韬,谢淑云,梁馨之,沈啟武,董桥峰,周玮航,王文慧,陈志军,杨帆.普朗Cu-Au矿区覆盖层非常规地球化学勘查找矿试验[J].贵州地质,2025,42(2):222-234
普朗Cu-Au矿区覆盖层非常规地球化学勘查找矿试验
Unconventional Geochemical Prospecting Trial for Overburden in the Pulang Cu-Au Mining District
投稿时间:2025-02-19  
DOI:
中文关键词:  覆盖层找矿  热释汞  卤素  普朗Cu-Au矿区
英文关键词:Overburden prospecting  geochemistry  Heat-released mercury survey  Heat-released halogen  Pulang copper deposit
基金项目:本研究受国家自然科学基金面上项目“荒漠覆盖层成矿元素垂向迁移的非线性响应机理研究”(41872250)和云南迪庆有色金属有限责任公司科技项目“云南迪庆有色金属有限责任公司普朗铜矿区覆盖层 Cu-Au 深穿透地球化学勘查与找矿预测示范研究项目”(编号DQYS-JSZX-08-2023-157)联合资助
作者单位
刘文韬 中国地质大学武汉 地球科学学院湖北武汉430074 
谢淑云 中国地质大学武汉 地球科学学院湖北武汉430074 
梁馨之 中国地质大学武汉 地球科学学院湖北武汉430074 
沈啟武 云南迪庆有色金属有限责任公司云南迪庆674400 
董桥峰 云南迪庆有色金属有限责任公司云南迪庆674400 
周玮航 中国地质大学武汉 地球科学学院湖北武汉430074 
王文慧 中国地质大学武汉 地球科学学院湖北武汉430074 
陈志军 中国地质大学武汉 资源学院湖北武汉430074 
杨帆 中国地质科学院地球物理地球化学勘查研究所河北廊坊065000 
摘要点击次数: 12
全文下载次数: 5
中文摘要:
      云南普朗超大型铜多金属矿位于三江成矿带中段义敦岛弧南段,受复杂地质背景和厚覆盖层影响,传统地球化学方法难以探测深部矿体信息。本文以普朗铜矿区典型勘探线覆盖层土壤样品为研究对象,研究区分为四种基岩区,除石英闪长玢岩区外,其余样品均为母岩原地风化产物,受远源影响较小。系统聚类与主成分分析结果将土壤元素划分为沉积相关的Mn、Zn、Pb组和热液作用相关的Ag、Mo、Cu、Au组,其中Cu、Au、Ag变异显著,成矿潜力大。土壤热释汞异常在本区的找矿指示效果明显,研究区土壤热释汞异常与矿体位置基本吻合,且异常衬度较高,指示效果较优。F元素与其余卤素元素异常趋势相反,且异常衬度显著偏高,这种反向分异特征本身即可作为关键的地球化学指示标志,可能揭示深部特殊物质来源或差异化的迁移富集机制。鉴于此,本研究为覆盖层地区Cu-Au矿床勘查提供了新的思路和方法,对类似地区找矿工作具有重要的借鉴意义。
英文摘要:
      TheYunnan Pulang super-large copper polymetallic mine is located in the southern part of Yidun island arc in the middle part of Sanjiang metallogenic belt,which is affected by the complex geological background and thick overburden layer,and it is difficult to detect the information of the deep ore bodies by traditional geochemical methodsIn this paper,we take the soil samples of the overburden layer of the typical exploration line in Pulang copper mining area as the research object,and the study area is divided into four bedrock zones,except for the quartz amphibole porphyritic zone,the rest of the samples are the weathering products of the mother rock in situ,which are less affected by the remote sourcesThe results of systematic clustering and principal component analysis classify the soil elements into deposition-related Mn,Zn and Pb groups and hydrothermal action-related Ag,Mo,Cu and Au groups,among which Cu,Au and Ag have significant variations and high mineralization potentialSoil pyrogenic Hg anomalies in this area have obvious indicative effects on mineralization,the soil pyrogenic Hg anomalies in the study area basically coincide with the location of the ore bodies,and the anomalies have high contrasts,which have better indicative effectsThe anomalies of the F element and the rest of the halogenated elements have the opposite trend and the anomalous contrasts have significantly high contrasts,and the reverse divergent characteristics can be used as the key geochemical indicative signatures,which may reveal the origin of the special materials in the deep or the differentiated migration and enrichment mechanismIn view of this,the present study provides new ideas and methods for the exploration of Cu-Au deposits in the overburden area,which is of great significance to the mineral prospecting work in similar areas
查看全文  查看/发表评论  下载PDF阅读器