| 老挝帕奔金矿成矿流体特征及成因类型 |
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| 引用本文： | 牛英杰,孙宏岩,王居松,陈京玉,刘智勇,汪宽.老挝帕奔金矿成矿流体特征及成因类型[J].地质找矿论丛,2017,32(2):317-323. |
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| 作者姓名： | 牛英杰 孙宏岩 王居松 陈京玉 刘智勇 汪宽 |
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| 作者单位： | 1. 昆明理工大学国土资源学院,昆明650093;天津华北地质勘查局,天津300170;2. 天津华北地质勘查局,天津,300170 |
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| 基金项目： | 中央地质勘查基金和国外矿产资源勘查基金 |
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| 摘 要： | 帕奔金矿位于琅勃拉邦—黎府(泰国)成矿带的中部,矿床容矿围岩主要为灰岩,矿体严格受NNW—近SN向断裂控制。流体包裹体研究表明,含矿方解石中包裹体为液、气两相包裹体,以液相为主;成矿均一温度为164~252℃,平均盐度(w(NaCl,eq))为1.77%~7.64%,具中低温、低盐度特征;估算成矿压力为9.34×10~5~21.37×10~5 Pa,成矿深度为0.48~0.960km;矿石中方解石的碳同位素δ(~(13) C_(V-PDB))=-4.5×10~(-3)~-5.2×10~(-3),氧同位素δ(~(18) O_(V-SMOW))=20.3×10~(-3)~21.1×10~(-3),方解石为流体与二叠系海相碳酸盐岩相互作用的产物。综合分析认为帕奔金矿为浅成中低温热液型金矿床。
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| 关 键 词： | 帕奔金矿 成矿流体 碳、氧同位素 琅勃拉邦 老挝 |
| 收稿时间： | 2016/2/25 0:00:00 |
Study on features of ore-forming fluid and ore genesis of phapon gold deposit, Luangprobang, Laos |
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| NIU Yingjie,SUN Hongyan,WANG Jusong,CHEN Jingyu,LIU Zhiyong and WANG Kuan.Study on features of ore-forming fluid and ore genesis of phapon gold deposit, Luangprobang, Laos[J].Contributions to Geology and Mineral Resources Research,2017,32(2):317-323. |
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| Authors: | NIU Yingjie SUN Hongyan WANG Jusong CHEN Jingyu LIU Zhiyong and WANG Kuan |
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| Institution: | Kunming University of science and technology, Kunming 650093, China;Tianjin North China Geological Exploration Bureau, Tianjin 300171, China,Tianjin North China Geological Exploration Bureau, Tianjin 300171, China,Tianjin North China Geological Exploration Bureau, Tianjin 300171, China,Tianjin North China Geological Exploration Bureau, Tianjin 300171, China,Tianjin North China Geological Exploration Bureau, Tianjin 300171, China and Tianjin North China Geological Exploration Bureau, Tianjin 300171, China |
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| Abstract: | Phapon gold deposit is located at middle of LuangPrabang-Loei (Thailand) metallogenic belt and hostrd by limestone.Ore body is strictly controlled by limestone and ore bodies are controlled by NNW-near NS fault.Inclusion in Au-bearing alcite is liquid gas two-phase inclusion but dominated by fluid phase.The homogenization temperature is 164～252℃,average salinity(ω(NaCl,eq))is 1.77％～7.64％ characteristic of medium low temperature and low salinity.metallogenic pressure is estimated at 9.34× l05 ～21.37 × 105 Pa,metallogenic depth 0.48～0.960 km.δ(13 CVPDB) =-4.5 × 10-3 ～-5.2 × 10-3 and δ(18OV-SMOW) =20.3 × 10-3～21.1 × 10-3 of the calcite indicate that the calcite is the product of the interaction of liquid and Permian marine carbonate.Comprehensive analysis suggests that Phapon gold deposit is a shallow epithermal gold deposit. |
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| Keywords: | Phapon gold deposit ore-forming fluid C-O isotope Laos |
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