An Analysis of Relationship between the Microfracture Features and Mineral Morphology of Granite

Table 2

Main mineral morphology features of granite.

Mineral	Particle size (mm)	Particle structure	Crystal form	Cleavage	Mohs hardness
Biotite	0.4–1.0	Self-shaped flake structure, perfect cleavage	Flake	Perfect cleavage	2.5
Quartz	0.2–1.5	Aggregate distribution, noncleavage	Prismatic and granular	Noncleavage and conchoidal fracture	7
K-feldspar	1.0–5.0	Lattice double crystal structure and perthitic texture	Thick plate and short columnar	Two groups of cleavage	6
Plagioclase	0.5–3.0	Semi-self-shaped plate, cluster twin, and girdle structure	Plate	Two groups of cleavage	6–6.5