| 江西省金山金矿有机流体与金矿关系 |
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| 引用本文：.1998.Relationship between organic fluids and gold mineralization in the Jinshan gold deposit, Jiangxi Province[J].Mineral Deposits,17(1):15~24 |
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| 基金项目:国家自然科学基金资助项目（49672114） |
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| 中文摘要:对江西省金山金矿流体包裹体研究表明，矿区发育的包裹体有：①气-液两相盐水溶液包裹体，占包裹体总量80 % ~ 80 %；②纯有机烃类包裹体，占包裹体总量10 %~ 15%；③含盐类子矿物多相包裹体，占包裹体总量1%左右；④纯CO2包裹体(含液态CO2三相包裹体），占包裹体总量1%以下。流体时空演化表明，成矿前深大断裂引发深部流体上侵，带来了深部的纯CO2流体和岩浆划后高舳度流体，伴随后期构造活动，大量向下循环的大气水，不仅温度升高，而且在水-岩交换过程中带来地层中的有机质。在对流体包裹体深入研究的基础上，对成矿流体种类、流体的时空演化，特别是有机流体在成矿巾的作用等进行了有益的探索。 |
| 中文关键词:金山金矿，流体包裹体，成矿流体，有机流体，江西 |
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| Relationship between organic fluids and gold mineralization in the Jinshan gold deposit, Jiangxi Province |
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| Abstract:I'he Jinshan deposit is a large size gold deposit within volcanics-bearing epimetamorphic rocks of Mesoproterozoic Shuangqiaoshan Group, with the mineralization obviously controlled by the ductile shear zone. Fluid inclusion studies show that there mainly exist four types of fluid inclusions in the ore district: (1) gas-liquid brine inclusions which make up 80% ~ 85% of total inclusions; (2) pure hydrocarbon inclusions which account for 10%～15% of total inclusions; (3) saline daughter minerals-bearing polyphase inclusions that constitute some 1%; (4) pure CO2 inclusions (as well as liquid CO2-bearing three-phase inclusions) that make up less than 1%. According to the study of temporal-spatial evolution of fluids, the pre-ore deep-seated fault responsible for the upward migration of deep fluids, which carried deep pure CO2 fluids and postmagmatic high salinity fluids; with the late-stage tectonic activity, large (1uantities of downward circulating meteoric water not only became increasingly hotter, but also extracted organic matter from the strata during the water-rock exchange, the formation of organic fluids raised the activation and migration capacity of gold in the strata, whereas the mixing between the organic fluid and the postmagmatic hydrothermal solution caused the precipitation and accumulation of gold ores. The role of organic fluid seems to have been one of the important mechanisms responsible for the formation of the Jinshan gold deposit. |
| keywords:Jinshan gold deposit, fluid inclusion, ore-forming fluid, organic fluid |
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