摘要
板庙子金矿床地处夹皮沟成矿带西部,为一受韧性剪切带控制的中型规模矿床,矿化类型为含金石英脉型。流体包裹体有CO2三相、气液两相包裹体两种类型。测温结果显示:含CO2三相包裹体均一温度为250～326℃、盐度(w(NaCl))为4.51%～7.14%;气液两相包裹体均一温度为129～229℃、w(NaCl)为5.25%～7.01%。据包裹体的测温结果估算成矿压力为34.7～109.6MPa,矿床形成深度约6～7km。结合该区成矿地质背景,认为该矿床属中深层次矿床,其深部仍应有一定的找矿前景。
The Banmiaozi gold deposit is a medium-sized one structurally controlled by the ductile shear zone in the western Jiapigou auriferous metallogenic belt.The main mineralization type of the deposit is gold-bearing quartz vein.Fluid inclusions in quartz can be classified into aqueous two-phase and CO2-bearing three-phase types.The homogenization temperatures for the CO2-bearing three-phase inclusions range from 250 ℃ to 326 ℃,and the salinities range from 4.51% to 7.14%;the homogenization temperatures for the aqueous two-phase range from 129 ℃ to 229 ℃,and the salinities range from 5.25% to 7.01%.According to the results of inclusions temperature measurement,the metallogenic pressure is estimated mainly between 34.7-109.6 MPa and the formation depth of deposit at about 6-7 km.Considering the metallogenic setting in this area,the deposit should be prospecting for its moderate-deep erosion.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2010年第5期1053-1060,共8页
Journal of Jilin University：Earth Science Edition
基金
国土资源部国家资源补偿费项目(G2B2004-01)
关键词
含金石英脉
流体包裹体
金矿床
吉林省板庙子
gold-bearing quartz vein
fluid inclusion
gold deposits
Banmiaozi,Jilin Province
