摘要
那哥铜、铅多金属矿床构造控制明显,矿体产于近东西向的F2断层中;地层中成矿元素含量Cu等低,而构造破碎带内及那哥辉绿岩体Cu、Pb等含量高;地层、构造及岩体的As、Zn等含量基本相同;地层、构造、岩体微量元素对比及硫铅同位素显示,成矿元素可能来自深部幔源。综合研究认为其成因类型可能归为岩浆热液矿床,构造起到至关重要作用。
The ICP-MS results of the samples from the main fault(Zaibian-Jiabang fault),sub-metallization fault and metallization fault indicate that the structure control is very patency.The ores are occurrence in F2,which lies near transmeridional orientation.The metallogenetic element such as Cu is low in stratum,but it is enriching in tectonic position and diabase,also with high Pb.however,the As,Zn and other metallogenetic elements almost the same in stratum,fault,and diabase.The contrast of trace elements in stratum,fault,and diabase and δ34SV-CDT‰,which show the ore-forming elements come from magma-hydrothermal origin,but couldn't except the Qingbaikou stratum,the Pb isotope also get the same result.The style of Nage Cu,Pb polymetallic sulfide ore genesis maybe belongs to magma-hydrothermal origin.
出处
《矿产与地质》
2011年第2期131-137,167,共8页
Mineral Resources and Geology
基金
国家重点基础研究发展计划(973计划)课题(2007CB411402)
中科院地化所与贵州地矿局102队合作项目联合资助
关键词
构造地球化学
元素地球化学
同位素地球化学
矿床成因
从江那哥
贵州
Tectonic-geochemistry,Element-geochemistry,isotopic-geochemistry,ore-forming metals and fluids,genesis,Congjiang-Nage
