| 华北地台北缘及北邻地区铜、铅、锌、锡矿床流体包裹体研究 |
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| 引用本文：.1998.Fluid inclusion studies of copper, lead, zinc and the deposits in northern margin of north China platform and its northern adjacent areas[J].Mineral Deposits,17(3):256~263 |
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| 基金项目:国家“七五”科技攻关项目（75-55-03-3） |
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| 中文摘要:在对华北地台北缘及北邻地区52个铜、铅、锌、锡矿床流体包裹体研究的基础上，概括总结出岩控型、层控型和混控型三大类型及多个亚类型矿床的主要成矿物理化学条件，建立了各类型矿床矿物流体包裹体成矿模式，并用以找矿。 |
| 中文关键词:流体包裹体, 成矿模式, 找矿, 华北地台北缘 |
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| Fluid inclusion studies of copper, lead, zinc and the deposits in northern margin of north China platform and its northern adjacent areas |
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| Abstract:Based on fluid inclusion studies of quartz from 52 copper, lead, zinc and tin deposits hosted in an area of 170 km2 on the northern margin of North China platform and its northern adjacent fold system, the authors have divided these deposits into three subtypes, namely, intrusion-bound type, strata-bound type and complex-bound type, which in turn can be further divided into several subtypes. The intrusion-bound deposits are genetically related to magmatism. In deposits within or near intrusions, daughter minerals are abundant in the fluid inclusions, and gaseous incluions account for a considerable percentage. With the increasing distance from the intrusion, the homogenization temperature and salinity decrease, and the temperature, salinity, density, pH, Eh and fO2 values show regular variation. The metallogenic fluids are derived from mixed magmatic water and meteoric water. The F- and crcontents are relatively high. The strata-bound deposits are mainly controlled by strata. With the intensification of reformation, lenticular orebodies or vein orebodies were formed. According to sedimentary types and reformation characteristics, the strata-bound deposits are further divided into five subtypes which show obvious differences in concentration, size, type, gas-liquid ratio and chemical com position of fluid inclusions. The complex-bound deposits are controlled not only by strata but also by intrusions. The reformation process is divided into magmatic hydrothermal reformation, volcanic hydrothermal reformation and magmatic thermal reformation. Different reformation intensities result in differences in size, concentration, type and chemical com position of fluid inclusions. |
| keywords:northern margin of North China platform, fluid inclusion, metallogenic model, prospecting |
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