Sources of ore-forming fluids and metallic materials in the Jinwozi lode gold deposit,eastern Tianshan Mountains of China
作者单位：Key Laboratory of Research for Mineral ResourcesInstitute of Geology and GeophysicsChinese Academy of Sciences School of the Earth and Land ResourcesChina University of Geosciences(Beijing)
会议名称：《中国科学院地质与地球物理研究所2003学术年会》
会议日期：2003年
学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程]
基 金：supported by the Ministry of Science and Technology of China(Grant Nos.2001 CB409803 and 95-Y-25)
关 键 词：sulfide-hosted fluid inclusion H- and O-isotopes gas composition lode gold deposit eastern Tianshan Mts
摘 要：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.