摘要
I.INTRODUCTION The interaction of biotite granite and solution at different temperatures, under pressures （including fugacity）and solution compositions showed different results. Some results on the systems biotite-SiO<sub>2</sub>-Pl-NaCl-H<sub>2</sub>O and biotite-SiO<sub>2</sub>-Li<sub>2</sub>CO<sub>3</sub>-NaF-H<sub>2</sub>O (f<sub>o2</sub> and f<sub>HF</sub> were controlled )have been published. This article describes some experimental results
