Explanation

A structure in metamorphic rock formed by directional arrangement of small scale like minerals that cannot be recognized by the naked eye. It is a kind of structure formed by domain metamorphism and a typical structure of phyllite. Its characteristic is that the scale like minerals are arranged in a directional manner, but the particle size is very small. It is indistinguishable to the naked eye. Only on the schistosity surface, there is a strong silk luster, and on the schistosity surface, there are dense small wrinkles.

Classification