the rock mass consists of fresh sericite quartz phyllite or fresh leptynite.
巖体为新鲜绢云母石英千枚巖或新鲜变粒巖。
its main rocks is the metamorphic pelitic siltstone, the feldspathic quartz wacke, the fine sandial feldspathic quartz siltstone, the feldspathic wacke and the sericite quartz phyllite etc.