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。
The granitic gneissic rock series contained the early rich-agpaitic TTG-granites and the later rich-potash granites.
花岗质片麻岩包括早期富钠的TTG质花岗岩和稍后的富钾花岗岩。
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