Macro- and Microresearch on Swelling Characteristics and Deformation Mechanism of Red-Bed Mudstone in Central Sichuan, China

Table 2

Mineral composition and quantitative proportion.

No.	Sampling location	Mineral proportion (%)
		Montmorillonite	Illite	Quartz	Albite	Kaolinite	Calcite	Hematite
1	Neijiang	20.70	17.43	35.92	17.64	3.59	3.22	1.50
2		19.67	15.36	35.32	18.11	5.12	4.75	1.66
3		20.14	14.54	38.63	20.54	4.88	—	1.27
1	Yibin	12.63	14.63	32.45	18.56	3.43	10.98	7.32
2		11.83	8.95	38.45	22.43	4.43	8.35	5.56
3		12.89	13.85	31.89	19.15	3.33	11.34	7.56
1	Qianjiang	14.81	17.71	35.33	—	—	32.15	—
2		14.17	10.25	39.41	—	—	36.16	—
3		12.17	14.60	40.74	—	—	32.49	—