The Xiajinbao gold deposit is located in Yong’an-Xiayingfang-Maojiagou polymetallic metallogenic belt,which is animportant metallogenic belt in North China block.In this paper,we present a detailed study on fluid inc...The Xiajinbao gold deposit is located in Yong’an-Xiayingfang-Maojiagou polymetallic metallogenic belt,which is animportant metallogenic belt in North China block.In this paper,we present a detailed study on fluid inclusions and stable isotopes ofthe Xiajinbao gold deposit,Hebei Province,China,aiming at discussing the ore source,evolution of ore-forming fluid andore-forming mechanism of the deposit.The macroscopic geological characteristics,S and Pb isotopic analysis results show that thesource of ore-forming materials is mainly from granitic magma,and subordinately from country rocks.H and O isotopic compositionfeatures indicate that the ore-forming fluid is mainly derived from magmatic water.Fluid inclusion characteristics show that theore-forming fluid experienced boiling during the early mineralization stage,which led to the precipitation of gold.Fluid mixingdominated the precipitation of the ore-forming materials during the middle and late stages.The gold precipitation was caused bywater/rock reaction throughout the whole ore-forming process.展开更多
基金Project(2015CX008) supported by the Innovation Driven Plan of Central South University,China
文摘The Xiajinbao gold deposit is located in Yong’an-Xiayingfang-Maojiagou polymetallic metallogenic belt,which is animportant metallogenic belt in North China block.In this paper,we present a detailed study on fluid inclusions and stable isotopes ofthe Xiajinbao gold deposit,Hebei Province,China,aiming at discussing the ore source,evolution of ore-forming fluid andore-forming mechanism of the deposit.The macroscopic geological characteristics,S and Pb isotopic analysis results show that thesource of ore-forming materials is mainly from granitic magma,and subordinately from country rocks.H and O isotopic compositionfeatures indicate that the ore-forming fluid is mainly derived from magmatic water.Fluid inclusion characteristics show that theore-forming fluid experienced boiling during the early mineralization stage,which led to the precipitation of gold.Fluid mixingdominated the precipitation of the ore-forming materials during the middle and late stages.The gold precipitation was caused bywater/rock reaction throughout the whole ore-forming process.
