摘要
辽宁四道沟金矿定位于鸭绿江断裂西侧。其容矿围岩为辽河群盖县组的变质岩系。成矿流体中富含 Na+ 、Ca2 + 、Cl-离子和还原性气体 (CO、N2 、CH4、H2 )。成矿温度为 16 0~ 2 80℃ ,成矿压力为 45~ 5 5 MPa。Eh、p H、f O2 和氢氧同位素值表明 ,成矿为相对弱还原环境 。
Sidaogou gold mine is located in the west side of Yalujiang river fault and hosted in the metamorphic rock series of the Gaixian Formation of the Liaohe Group. Its ore forming fluids are enriched in Na +, Ca 2+ and Cl - ions and reducing gases (CO, N 2, CH 4 and H 2). The values of metallogenic temperatures and pressures are 160~280℃ and 45~55MPa, respectively. The values of pH, Eh, f O 2 , δ 18 O and δD show that the ore forming environment and fluids are near neutral and weak reducing mixed fluids, respectively.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第4期591-594,共4页
Acta Petrologica Sinica
基金
国家杰出青年基金 (批准号 :4962 5 3 0 4)
国家科技部攀登计划预选项目 (95 -预 -3 9)联合资助
关键词
成矿流体
流体包裹体
氢氧同位素
金矿床
地质
Gold mine
Ore forming fluid, Fluid inclusions, Hydrogen and oxygen isotopes, Sidaogou