总结了钨(W)在地球不同圈层、不同相以及不同集合体之间的分配行为,并据此来探讨与花岗岩有关的热液型钨矿床的某些成因机制,并将W矿化所需的较高的浓集系数归因于这一系列不均匀分配行为的累积。同时强调了W在溶液/熔体体系,尤其是富F体系中的分配行为是理解其成矿机理的关键。热液中W主要以钨酸(根)和碱性钨酸盐离子存在,后因流经理化条件(温度、盐度、p H值)骤变而沉淀成矿。
In order to explore the mineralization mechanism of hydrothermal tungsten deposits,this paper summarized the partition behaviors of tungsten among different layers,different phases and different aggregates. The rather high concentration coefficient of tungsten mineralization was considered as the result from a series of non-uniform partitioning accumulations. The partition behavior of tungsten in the solution/melt system,especially in the F-rich fluidic system,was emphasized as the key in understanding its mineralization mechanism. Tungsten tends to be transported as simple tungstate or alkali-tungstate ion,and precipitates to form hydrothermal tungsten deposits when physical and chemical conditions,such as temperature,pressure and p H,change abruptly.