According to chemical composition,exchangeable cation and thermal behaviors of crystal structure,Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.

• 根据宣城沸石化学成分、可交换阳离子组成和热处理晶体结构演化,判断宣城沸石为富钙斜发沸石,具有低热稳定性的特点。