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中国科学院地质与地球物理研究所2003学术年会

作者：刘伟李新俊邓军 Key Laboratory of Research for Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences School of the Earth and Land Resources China University of Geosciences(Beijing)

This paper presents gas compositions and H-,O-isotope compositions of sulfide-and quartz-hosted fluid inclusions,and S-,Pb-isotope compositions of sulfide separates collected from the principal Stage 2 ores in Veins 3 and 210 of the Jinwozi lode gold deposit,eastern Tianshan Mountains of *** inclusions trapped in quartz and sphalerite are dominantly primary.H- and O-isotopic compositions of pyrite-hosted fluid inclusions indicate two major contributions to the ore-forming fluid that include the degassed magma and the meteoric-derived but rock O-buffered ***,H-and O-isotopic compositions of quartz-hosted fluid inclusions essentially suggest the presence of ***-hosted fluid inclusions show considerably higher abundances of gaseous species CO,N,HS,*** quartz-hosted *** linear trends among inclusion gaseous species reflect the mixing tendency between the gas-rich magmatic fluid and the *** relative enrichment of gaseous species in sulfide-hosted fluid inclusions. coupled with the banded ore structure indicating alternate precipitation of quartz with sulfide minerals, suggests that the magmatic fluid has been inputted to the ore-forming fluid in *** and lead isotope compositions of pyrite and galena separates indicate an essential magma derivation for sulfur but the multiple sources for metallic materials from the mantle to the bulk crust.

关键词： sulfide-hosted fluid inclusion H- and O-isotopes gas composition lode gold deposit eastern Tianshan Mts

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The distribution,characteristics and fluid sources of lode gold deposits:An overview

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Science China Earth Sciences 2021年第9期64卷 1463-1480页

作者： Christina Yan WANG Bo WEI Wei TAN Zaicong WANG Qingdong ZENG CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China CAS Center for Excellence in Deep Earth Science Chinese Academy of SciencesGuangzhou510640China State Key Laboratory of Geological Processes and Mineral Resources(GPMR) School of Earth SciencesChina University of GeosciencesWuhan430074China Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Institutions of Earth Science Chinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100029China

lode gold deposits are among the most economically important types of gold deposits in the ***,they formed mainly in three time intervals,2.8 to 2.5 Ga,2.1 to 1.8 Ga,and 700 Ma to the *** of ore-forming fluids and other components are of critical importance in a better understanding of the genesis and the geodynamic controls of these *** ore-forming fluids were mostly derived from devolatization of sedimentary and/or volcanic sequences during greenschist to amphibolite facies metamorphism associated with orogenic deformation,magmatic hydrothermal fluids have been increasingly shown to be important in many gold deposits in various *** this review paper,we summarize the major features of lode gold deposits,possible sources of ore-forming fluids,and mechanisms of gold *** we acknowledge the critical role of metamorphically derived fluids in the genesis of such deposits worldwide,we emphasize that mantle-or basaltic magma-derived fluids may have been much more important than commonly *** use the Liaodong peninsula of the North China Craton as an example to demonstrate the significance of mantle-derived *** earlier studies and new data,we show that some of the late Mesozoic lode gold deposits in the North China Craton may have formed from magmatic hydrothermal fluids due to the extension and partial melting of the hydrated,metasomatized subcontinental lithosphere mantle,as best exemplified by the Wulong gold deposit.

关键词： lode gold deposit Ore-forming fluid Metasomatized subcontinental lithosphere mantle Mantle-derived melt/fluid North China Craton

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Source and location mechanism for lode gold deposits hosted in metamorphic rocks in northeastern Hunan, China

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Journal of Central South University of Technology 2001年第2期8卷 108-113页

作者： LIU Liang ming,PENG Sheng lin,YANG Qun zhou (College of Resources, Environment and Civil Engineering, Central South University, Changsha 410083, China) 1. College of Resources Environment and Civil Engineering Central South University 410083 Changsha China

For understanding the source and location mechanism of lode gold deposits hosted in metamorphic rocks in northeastern Hunan, the authors analyzed the REE (rare earth elements) in ores and their host rocks, metallogenic elements in host rocks near and distant from the ore bodies, and characteristics of ore controlling structures, and deduced their genetic implication. Their geochemical features of REE and metallogenic elements suggest that they are formed by mobilization of dispersed metallogenic materials in Lengjiaxi Group of Middle Proterozoic during deformation and metamorphism process, mainly in Wulingian period. From the attributes of ore controlling structures and regularity of location of gold metallization, it is concluded that the location of gold deposits is closely related to reverse shearing. Ore forming fluids are focused on the secondary faults and extension fractures of reverse shear zones of nearly EW strike by stress driven diffusion and seismic pumping.

关键词： lode gold deposit location fluid focus seismic pump northeastern Hunan

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