Discussions are given to the processes of albitization and iron activation during the formation of iron deposits, the transportation and hydrolysis of iron, chemical reactions characteristic of wall rock alteration re...Discussions are given to the processes of albitization and iron activation during the formation of iron deposits, the transportation and hydrolysis of iron, chemical reactions characteristic of wall rock alteration responsible for the localization of iron deposits, the dynamic factors affecting these reactions as well as the systematic pH variation of ore forming solutions. A metasomatic series of Na→Ca→Fe is noticed when diorite and dark minerals + anorthite + quartz are reacted with 1--3N NaCl solution at 400-500℃。Hydrolysis of FeCl3 is experimentally studied as a function of temperature and pressure.The authors suggest that the pH of ore forming solution varies in the direction of alkalic→ intermediate→acid→intermediate→alkalic from eariler to later stages.展开更多
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-S...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展开更多
文摘Discussions are given to the processes of albitization and iron activation during the formation of iron deposits, the transportation and hydrolysis of iron, chemical reactions characteristic of wall rock alteration responsible for the localization of iron deposits, the dynamic factors affecting these reactions as well as the systematic pH variation of ore forming solutions. A metasomatic series of Na→Ca→Fe is noticed when diorite and dark minerals + anorthite + quartz are reacted with 1--3N NaCl solution at 400-500℃。Hydrolysis of FeCl3 is experimentally studied as a function of temperature and pressure.The authors suggest that the pH of ore forming solution varies in the direction of alkalic→ intermediate→acid→intermediate→alkalic from eariler to later stages.
文摘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
