| 广西长营岭钨锡矿床原生晕分带形成的动力学机制 |
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| 引用本文： | 宋慈安.广西长营岭钨锡矿床原生晕分带形成的动力学机制[J].桂林工学院学报,1991(4). |
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| 作者姓名： | 宋慈安 |
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| 作者单位： | 桂林冶金地质学院应用化学系 |
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| 摘 要： | 长营岭钨锡矿床热液成矿-成晕作用可用包含化学动力学和流体动力学在内的综合模型进行描述,矿床和原生晕的形成是其中某种动力学因素起主导作用并与其他因素相耦合的结果。元素的扩散作用和扩散系数大小不同是形成原生晕横向分带的主要原因。原生晕轴向分带具有Sn,W,F等元素在上,亲硫元素在下的“逆向”特征,其形成主要同热液的渗滤速率及两类元素大量进入热液的时间先后有关。
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| 关 键 词： | 钨矿床 锡矿床 原生晕分带 动力学 扩散 渗滤 广西 长营岭 |
THE DYNAMIC MECHANISM OF THE FORMATION OF PRIMARY HALOS ZONING IN CHANGYINGLING W-Sn DEPOSIT,GUANGXI |
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| Song Ci'an.THE DYNAMIC MECHANISM OF THE FORMATION OF PRIMARY HALOS ZONING IN CHANGYINGLING W-Sn DEPOSIT,GUANGXI[J].Journal of Guilin University of Technology,1991(4). |
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| Authors: | Song Ci'an |
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| Affiliation: | Song Ci'an Department of Applied Chemistry,Guilin College of Geology |
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| Abstract: | The synthetic model for the ore-forming and halo-forming processes ofhydrothermal fluid of Changyingling W-Sn deposit may be described as adynamic equation involving chemical reaction and flows of advection,infiltration and diffusion. Ore deposits and primary halos were formed asa result of a leading role of one of three tems in the equation coupled withthe other two terms. The formation of the transversal zoning of primaryhalos is related mainly to diffusion and the difference of diffusion coefficientsof elements. The axial zoning of primary halos is characterized by "reverse"zoning indicating W, Sn, F ect. are front elements of vein, whereassulphophile elements are mid-lower ones. It is related principally to theinfiltration rate of hydrothermal fluid and the time of getting into hydro-thermal fluid by elements in large quantities. |
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| Keywords: | tungsten deposit tin deposit zoning of primary halos dynamics diffusion infiltration Guangxi Changyingling |
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