Experimental and Numerical Investigation of Energy Evolution Characteristic of Granite considering the Loading Rate Effect

Table 6

Microscopic parameters of mineral grains.

Mineral composition	Bulk modulus (GPa)	Shear modulus (GPa)	Poisson’s ratio
Quartz	38.2	43.3	0.20
Potassium feldspar	55.6	29.5	0.25
Plagioclase	45.6	27.3	0.26
Biotite	59.7	42.3	0.27