| 青海青龙沟金矿床地质特征及流体包裹体研究 |
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| 引用本文： | 张博文,孙丰月,薛昊日,王磊.青海青龙沟金矿床地质特征及流体包裹体研究[J].黄金,2010,31(2):14-18. |
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| 作者姓名： | 张博文 孙丰月 薛昊日 王磊 |
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| 作者单位： | 吉林大学地球科学学院 |
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| 摘 要： | 青龙沟金矿床地质特征研究表明,矿化发生在NW向断裂组及NS向次背斜中,矿石类型为变砂岩、硅化白云石大理岩、蚀变闪长玢岩及绢云千枚岩型,围岩蚀变硅化分2期,表现出该金矿床多期次成矿的过程。流体包裹体研究表明,M2矿体硅化大理岩石英中发育气液二相包裹体,成矿流体属H2O-NaCl体系类型。成矿流体具有低盐度(2.73%~7.99%NaCl)、低密度(0.86~0.95 g/cm3)的特征,成矿温度为123.6~204.5℃,成矿压力为8.99~18.53 MPa,形成深度为0.9~1.91 km,显示出该矿床浅成环境成矿作用下一类成矿流体的性质。
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| 关 键 词： | 青龙沟金矿床 流体包裹体 矿床成因 青海 |
Geological characteristics and study on fluid inclusion in Qinglonggou gold deposit, Qinghai province |
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| Zhang Bowen,Sun Fengyue,Xue Haori,Wang Lei.Geological characteristics and study on fluid inclusion in Qinglonggou gold deposit, Qinghai province[J].Gold,2010,31(2):14-18. |
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| Authors: | Zhang Bowen Sun Fengyue Xue Haori Wang Lei |
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| Affiliation: | ( College of Earth Sciences, Jilin University) |
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| Abstract: | The geological characteristics in Qinglonggou gold deposit show the mineralization occurs in NW fault set and NS sub anticline. The ore is of altered sandstone, silicification dolomite-marble, altered diorite-porphyrite and sericite phyllite type. The silicification alteration can be divided into 2 stages, which show the multi-phase metallogenic course of the gold mine. Fluid inclusion researches reveal that the air-liquid two-phase inclusion bears in M2 orebody silicification marble quartz and the ore-forming fluid belongs to H2O-NaCl system type. The characters of ore- forming fluid are low salinity（2.73 % -7.99 % ） and low density（0.86 -0.95 g/cm^3）. The ore-forming temperature is 123.6 -204.5℃, the pressure is 8.99 - 18.53 MPa and the depth is 0.9 - 1.91 km. It shows the properties of ore-forming inclusion in shallow depth environment. |
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| Keywords: | Qinglonggou gold deposit fluid inclusion genesis of the deposit Qinghai |
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