It is a product of volcanic rocks of the Mesozoic Era,over-saturated with silica and rich in potash. It can be compared with geode natrolite that producedin alkaline basalt series of the Cenozoic Era.

• 它是中生代硅酸过饱和并富钾质的火山岩系的产物,其意义可与产于新生代碱性玄武岩系中的晶洞钠沸石对比。