H_(2)S和SO_(2)气体地球化学测量在云南普朗斑岩铜矿中的应用  

Application of H_(2)S and SO_(2)gas geochemical measurements in the Pulang porphyry copper deposit,Yunnan Province

作　　者：沈啟武 陈志军[2,3] 董桥峰 李高鑫 胡明川 陈鑫[2,3] 余泽章[3] SHEN Qiwu;CHEN zhijun;DONG Qiaofeng;LI Gaoxin;HU Mingchuan;CHEN Xin;YU Zezhang(Yunnan Diqing Non-ferrous Metal Co.,Ltd.,Shangri-la Yunnan 674400,China;Practical Teaching and Innovative Talents Training Base in the Pulang Copper Mine,Shangri-la Yunnan 674400,China;Faculty of Earth Resources,China University of Geosciences(Wuhan),Wuhan 430074,China)

机构地区：[1]云南迪庆有色金属有限责任公司,云南香格里拉674400 [2]中国地质大学(武汉)普朗铜矿实践教学与创新人才培养基地,云南香格里拉674400 [3]中国地质大学(武汉)资源学院,武汉430074

出　　处：《地质科技通报》2025年第2期204-213,共10页Bulletin of Geological Science and Technology

基　　金：国家重点研发计划课题(2022YFF0801203);迪庆有色科研合作项目(DQYS-JSZX-08-2023)。

摘　　要：鉴于覆盖区找矿信息的识别和提取难度大,在覆盖区寻找斑岩铜矿面临巨大困难和挑战。斑岩铜矿中的矿体以低品位的金属硫化物为主,是否可以形成气体异常并确定矿体的延伸情况有待进一步研究。利用便携式气体快速分析仪在普朗斑岩铜矿区开展了H_(2)S和SO_(2)气体地球化学测量试验性研究。结果表明铜矿体上方可以形成很好的H_(2)S和SO_(2)气体地球化学异常,说明该方法能够揭示深部隐伏矿体等有效信息,通过异常在空间上的分布情况能够推测矿体在走向和倾向的延伸方向。二者协同性较好、浓度异常分布较为连续的部位具有很好的找矿潜力,是一种非常适合覆盖区斑岩铜矿矿产勘查的有效工作手段,为隐伏矿产勘查提供了新思路和新方法。Given the difficulty in identifying and extracting exploration information in covered areas,the search for porphyry copper deposits faces significant challenges.[Objective]The ore bodies in porphyry copper deposits are primarily low-grade metal sulfides,and further research is needed to determine the depth and extent of these deposits via gas geochemistry.[Methods]Preliminary experiments were conducted in this study using a portable gas analyzer for H_(2)S and SO_(2)geochemical measurements at the Pulang porphyry copper deposit.[Results]The results indicate significant H_(2)S and SO_(2)geochemical anomalies above copper mineralization,suggesting the method's efficacy in revealing hidden ore bodies and predicting their strike and dip extensions.[Conclusion]Areas showing good synergistic behavior,continuous anomalous concentration distributions,and potential for mineralization are promising targets for exploration.This approach represents an effective method for mineral exploration in covered porphyry copper deposits,offering new insights into prospecting concealed mineral resources.

关 键 词：覆盖区找矿 气体地球化学 斑岩铜矿 云南普朗 H_(2)S和SO_(2)气体 

分 类 号：P618.2[天文地球—矿床学] P315.7[天文地球—地质学]