基于老王寨金矿流体包裹体特征与成矿流体演化  

Fluid Inclusion Characteristics and Evolution of Ore-forming Fluids Based on Laowangzhai Gold Deposit

作　　者：邓碧平 刘琴 练晓矜 丁旭 吴永忠 张亚伟 DENG Bi-ping;LIU Qin;LIAN Xiao-qin;DING Xu;WU Yong-zhong;ZHANG Ya-wei(Guizhou Vocational and Technical College of Water Resources and Hydropower,Guiyang 551416,China)

机构地区：[1]贵州水利水电职业技术学院,贵州贵阳551416

出　　处：《世界有色金属》2023年第12期78-80,共3页World Nonferrous Metals

摘　　要：老王寨金矿床流体包裹体系统研究表明:矿床中发育NaCl-H_(2)O包裹体和CO_(2)-H_(2)O包裹体;初始流体为高温高压流体,随着成矿作用的进行,温度、盐度、压力和侵位深度均逐步降低;到了主成矿阶段,侵位3.00km,含矿流体演变为具有中低温压、低盐度密度的特征。综合研究表明,伴随由初始地幔流体的高温熔浆性质向低温热液性质演变,这种演变是由初始含矿地幔流体与地壳岩石相互作用,引发交代蚀变,导致壳幔物质相互作用与混染成矿。Systematic research on fluid inclusions of Laowangzhai gold deposit shows that NaCl-H_(2O) inclusions and CO_2-H_(2O) inclusions are widely developed,and the initial fluid is high temperature and high pressure fluid,and temperature,salinity,pressure and emplacement depth are all decreased gradually with the progress of mineralization,and in the main oreforming stage the initial fluid is evolved into the ore-bearing fluid with medium-low temperature,medium-low pressure,low salinity and low density,and the metallogenic depth is mainly about 3.00km.Comprehensive research indicates that along with the evolution from the high temperature molten property of the initial mantle fluid to the low temperature hydrothermal property,this evolution is caused by the interaction of the initial ore-bearing mantle fluid with the crustal rocks,which results in metasomatic alteration and in the interaction of crust-mantle materials and mixed mineralization.

关 键 词：成矿流体演化 老王寨金矿 流体包裹体特征 

分 类 号：P611[天文地球—矿床学] P597[天文地球—地质学]