湘东北万古金矿田江东金矿床成因——流体包裹体和H-O同位素制约
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袁梓焜,邵拥军,刘清泉,张毓策,王智琳
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Genesis of Jiangdong Gold Deposit in Wangu Gold Field,Northeast Hunan:Constraints from Fluid Inclusions and H-O Isotope
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Zikun YUAN,Yongjun SHAO,Qingquan LIU,Yuce ZHANG,Zhilin WANG
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表2 江东金矿床中不同阶段的流体包裹体测温结果
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Table 2 Thermometry results of fluid inclusions at different stages in the Jiangdong gold deposit
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成矿阶段 | 包裹体 类型 | Tm,CO2/°C | Tm,ice/°C | Tm,clath/°C | Th,CO2/°C | Th,total/°C | 盐度 [w(NaCl)]/% | 密度/(g·cm-3) |
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第Ⅰ阶段 | Type Ⅰ | - | -5.38~-1.66 | - | - | 264~342(L/V) | 2.83~8.38 | 0.684~0.827 | Type Ⅱ | -59.7~-56.8 | - | 5.3~8.6 | 22.7~29.1 | 275~347(L/V) | 2.82~8.56 | 0.767~0.969 | 第Ⅱ阶段 | Type Ⅰ | | -4.62~-1.52 | - | - | 255~318(L/V) | 2.60~7.33 | 0.730~0.845 | Type Ⅱ | -59.2~-56.7 | | 5.0~9.1 | 21.2~28.7 | 271~329(L/V) | 1.84~9.04 | 0.779~0.982 | 第Ⅲ阶段 | Type Ⅰ | - | -6.86~-1.67 | - | - | 194~261(L/V) | 2.85~10.31 | 0.828~0.937 | Type Ⅱ | -59.8~-56.8 | | 3.5~8.9 | 19.7~29.3 | 216~271(L/V) | 2.24~11.23 | 0.703~0.982 | 第Ⅳ阶段 | Type Ⅰ | - | -5.82~-1.08 | - | - | 157~235(L/V) | 1.87~8.71 | 0.853~0.963 |
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