Refers to the mineral composition of emerald crystal surface and cleavage plane of When the composition of the mineral particles thick jade, particularly evident.

Structures controlling the orebodies include plane cleavage, schistose cleavage and decollement plane, and the orebodies usually arrange in the form of "S", "H" or grid, and so on.

The cleavage and schistosity acted as an axial plane role in the early generation of compressed shear fold, and changed into a slip plane in the later generation of flexural slip fold.