Citation: | GUO Chuang, LU Yujie, OUYANG Zhiqiang, SHI Guowei. 2023. Geological Characteristics and Genetic Analysis of Laoyachao Gold Deposit in Shuikoushan, Hunan Province. Northwestern Geology, 56(5): 294-307. doi: 10.12401/j.nwg.2023105 |
Laoyachao gold deposit is located in the south margin of Hengyang basin and the middle part of Shuikoushan lead−zinc gold deposit. Gold ore bodies mainly occur in cryptoexplosive breccia system and contact fracture zone, which are controlled by structure, magmatic rock and stratum. Based on the regional geological background of gold deposits, ore deposit geological features, trace elements, S−Pb−O isotope characteristics, metallogenic temperature, pressure and salinity characteristics, orebody characteristics, ore characteristics, characteristics of wall rock alteration and assaying the fineness of native gold, as the basis, combining with the analysis of ore−forming geological conditions, deposit genetic type is determined as cryptoexplosion−liquid compound genesis of gold deposits (medium to low temperature).
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Regional tectonic geological map of Shuikoushan ore field
Geological plan of the middle Ⅺ section of Laoyachao gold deposit
Geological profile of 472 line of Laoyachao gold deposit
Macroscopic and microscopic characteristics of cryptoexplosion breccia in Laoyachao mining area
Geological section of 473 line in Laoyachao gold deposit
Lead isotope compositions
Lead isotope Δβ–Δγ classification figure
Environmental identification of lead isotopes