| 胶东北部超高品位金矿黄铁矿热电性研究 |
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| 引用本文：.2000.A study on thermoelectricity of pyrite from super high-grade gold deposits, northern Jiaodong[J].Mineral Deposits,19(4):307~314 |
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| 基金项目:国家科委攀登计划项目（B：85-34-05C） |
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| 中文摘要:对胶东北部超高品位金矿集中区黄铁矿热电标型的时空分布研究表明，P型黄铁矿出现率和P型黄铁矿热电系数平均值及P型黄铁矿热电系数离散性呈NE和NNE向带状展布，超高品位金矿位于这两组方向交汇部位的P型黄铁矿出现率大于90%．P型黄铁矿热电系数平均值大于250μV/℃，P型黄铁矿热电系数离散性小于1.5的区域内，反映了超高品位金矿形成予温度较低，成矿流体中As、Sb、Te等的含量较高，且温度和成分变化较小的条件，成矿部位处于成矿流体上升通道附近。 |
| 中文关键词:黄铁矿热电性 超高品位金矿 胶东北部 |
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| A study on thermoelectricity of pyrite from super high-grade gold deposits, northern Jiaodong |
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| Abstract:Several gold deposits with superhigh-grade ore are concentratedly distributed in Guojialing granodiorite, Cishang ranite and Archean Jiaodong Group in southeastern Penglai County, northern Jiaodong. A study of the thermoelectricity of pyrites from these super high-grade gold deposits and adjacent gold deposits shows that the frequency of P- type pyrite, the average value and dispersion of thermoelectrical coefficient of P-type are distributed spatially in NE-and NNE-trending zones. The gold deposits with super high-grade ore are located in the intersections of the two sets of zones, where the frequency of P-type pyrite is higher than 90%, the average value of thermoelectrical coefficient of P-type pyrite is higher than 250 μV/℃, and the dispersion of thermoelectrical coefficient of P-type pyrite is lower than l.5. These characteristics indicate that the super high-grade gold deposits were formed in the confined tensile faulted zone under the conditions of lower temperature, higher content of A s, Sb and Te in ore- forming fluid, and insignificant variation of temperatues and composition in the fluid. The abundant gold was derived from Guojialing granodiorite through the ore-forming fluid. Metallogenic location was close to the channel along which ore-forming fluid migrated up-w a rd. |
| keywords:thermoelectricity of pyrite, gold deposit with super high-grade ore, northern Jiaodong |
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