Explanation

Also known as envelope. The concept of inclusion can be divided into narrow and broad senses. In a narrow sense, it refers to the phase that is wrapped in the crystal during the crystal growth and is different from the matrix crystal. The concept of generalized inclusion refers to all characteristics that affect the overall homogeneity of crystal, that is, in addition to the narrow sense of inclusion, it also includes the differences in structural characteristics and physical properties of crystal, such as banded structure, ribbon, twin, fracture surface, and surface characteristics related to internal structure.

Classification