Geochemical Characteristics of Ore-Forming Fluid in Huanggoushan Gold Deposit,Jilin Province
Zhou Xiangbin
Li Jianfeng
Wang Keyong
Liang Yihong
Zhang Miao
Wei Liemin
Wang Zhigao
Abstract：Occurred in Zhenzhumen Formation of Laoling Group of Proterozoic Era and controlled by ductile shear belt,the Huanggoushan gold deposit is one of the most representative deposits in Laoling gold-polymetallic metallogenic belt in southern Jilin Province.Based on the geological characteristics,mineral assemblage and the crosscutting relationship between different kinds of veins,the hydrothermal mineralization processes can be divided into two main stages,namely,stageⅠpyrite arseno-pyrite quartz and stageⅡ later stibnite-milky quartz.Systematic study on petrography and microthermometry of fluid inclusions shows that quartz of Stage Ⅰcontains three types of primary fluid inclusions,which are CO 2 bearing three phases,carbonic and aqueous two phases inclusions respectively,and the ore forming fluid is of medium to low temperature and low salinity NaCl-H 2 O-CO 2 kind of solutions and immiscibility happened in the ore forming process,which led to the enrichment of gold etc;in quartz of Stage Ⅱ,there are aqueous two phases fluids only and ore forming fluid is of homogeneous NaCl-H 2 O kind of solu-tions.Isotopic studies of carbon,hydrogen and oxygen show that the ore forming fluids of mineralization Stage Ⅰ mainly de-rived from magmatic solutions,whereas fluids of mineralization stage Ⅱ mainly came from meteoric water in addition to the relicts of stage Ⅰ ore forming solutions.The values ofδD andδ1 3 CV-PDB reveal that the ore forming fluids of both mineralization Stage Ⅰ and Ⅱ all experienced strong rock water reaction.The genesis of the gold deposit is medium temperature magmatic hydrothermal deposit.
Keywords：Huanggoushan gold depositore-forming fluidgeochemical characteristicsore genesissouthern Jilin Province
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 121-130 )