利用热液金刚石压腔开展黑钨矿结晶实验的初步研究

发布时间：2018-05-25 01:17

  本文选题：热液金刚石压腔 + 结晶实验　； 参考：《地学前缘》2017年05期

【摘要】：钨是一种工业用途广泛的稀有金属,主要产于热液型矿床。确定钨元素迁移和沉淀的物理化学条件对于揭示热液型钨矿床的形成机制具有重要意义。本文应用新型热液金刚石压腔(HDAC-VT)开展了(Fe,Mn)WO_4-Li_2CO_3-H2O体系的原位观测结晶实验,9组实验结果表明,黑钨矿晶体的结晶温度集中在560~500℃,结晶压力主要集中在400~200MPa。黑钨矿的溶解度随体系内CO_2组分相对含量的增加而增加;碳酸锂的结晶导致CO_2组分的减少,诱发黑钨矿的快速结晶,这指示出CO_2组分对钨的迁移和沉淀具有重要作用。含矿流体中CO_2组分的散逸可能是黑钨矿沉淀富集成矿的重要因素之一。
[Abstract]:Tungsten is a rare metal widely used in industry, mainly occurring in hydrothermal deposits. It is important to determine the physical and chemical conditions for the migration and precipitation of tungsten elements in order to reveal the formation mechanism of hydrothermal tungsten deposits. In this paper, a new type of hydrothermal diamond chamber HDAC-VT has been used to carry out the in situ observation crystallization experiments of Fehmanwo _ 4-Li2CO3-H _ 2O system. The results show that the crystallization temperature of wolframite crystals is 560,500 鈩，

本文编号：1931419