【摘要】 本文在500℃和1×108Pa条件下，利用冷封口高温高压水热系统和焊封金管技术实验研究了黑云母和Na－Ca－氯化物溶液的相互作用，着重考察反应不同时间的黑云母表面和溶液化学的变化。黑云母中的K、Fe和Si不同程度地进入溶液相，而溶液中原有的Na和Ca含量降低；SEM／EDAX和EMAX研究表明，反应后的黑云母边缘部分明显失去K和Fe，应得到相当数量的H2O和一些Ca。黑云母中Fe活化的控制反应可能是H+交代作用。更多还原

【Abstract】 Using a standard cold-sealed high pressure and high temperature hydrothermal system and sealed gold capsule techniques,changes in solution chemistry and biotite surface after reaction with Na-Ca-chloride solutions for different times at 500℃ and 1 ×108Pa were experimentally studied.K,Fe and Si in biotite were transported into the fluid phase and the Na and Ca contents in the starting solution decreased to a certain extcnt. SEM/EDAX and EMAX studies indicated that at the marginal part of biotite K and Fe were eridently lost,and a considerable amoUnt of H2O and some Ca were gained. The reaction controlling hydrothermal alteration of biotite and Fe mobilization in the mineral is probably H+-metasomatism.更多还原