| Geochemistry of fluid inclusions from Linglong gold deposit in Shandong，China |
| |
| 作者单位： | 1． College of Earth Sciences，Jilin University，Changchun 130061，China; 2． College of Materials Science and Engineering，Jilin University，Changchun 130025，China |
| |
| 摘 要： | By means of microscopy and laser Raman spectroscopy,the authors studied the fluid inclusions in petrography.The results show that there exist three-phase CO2 -bearing and two-phase aqueous inclusions in gold ore;the fluid of NaCl-H2O--CO2 system went through immiscibility in ore-forming process.Ore-forming fluids were of low salinity(0.82%-5.40%NaCleqv),low density(0.54-0.93 g/cm3);mineralization tempera-ture were concentrated in 320℃--340℃,with ore-forming pressure in 62-126 MPa and mineralization depth in 6.34-9.35 km.The fluid inclusions in quartz are generally characterized by a small amount of CO2 and N2.Combined with recent results of the isotopic analysis for fluid inclusions and dating data,it was indicated that the main ore-forming fluids derived mainly from source of mantle-derived fluids with a small amount of magmatic fluid and meteoric water.The genetic type was mesothermal gold deposits involved by mantle-derived fluids.
|
| 关 键 词： | fluid inclusions geochemistry Linglong gold deposit Shandong |
Geochemistry of fluid inclusions from Linglong gold deposit in Shandong, China |
| |
| Authors: | ZHAO Yongyue WANG Li YANG Heting |
| |
| Institution: | ZHAO Yongyue 1,WANG Li1 and YANG Heting2 1.College of Earth Sciences,Jilin University,Changchun 130061,China;2.College of Materials Science and Engineering,Jilin University,Changchun 130025,China |
| |
| Abstract: | By means of microscopy and laser Raman spectroscopy,the authors studied the fluid inclusions in petrography.The results show that there exist three-phase CO2 -bearing and two-phase aqueous inclusions in gold ore;the fluid of NaCl-H2O--CO2 system went through immiscibility in ore-forming process.Ore-forming fluids were of low salinity(0.82%-5.40%NaCleqv),low density(0.54-0.93 g/cm3);mineralization tempera-ture were concentrated in 320℃--340℃,with ore-forming pressure in 62-126 MPa and mineralization depth in 6.34-9.35 km.The fluid inclusions in quartz are generally characterized by a small amount of CO2 and N2.Combined with recent results of the isotopic analysis for fluid inclusions and dating data,it was indicated that the main ore-forming fluids derived mainly from source of mantle-derived fluids with a small amount of magmatic fluid and meteoric water.The genetic type was mesothermal gold deposits involved by mantle-derived fluids. |
| |
| Keywords: | fluid inclusions geochemistry Linglong gold deposit Shandong |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《世界地质(英文版)》浏览原始摘要信息 |
| 点击此处可从《世界地质(英文版)》下载免费的PDF全文 |
