Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test

Table 1

Mineral composition of the samples.

Sample	Quartz	Plagioclase	Pyrite	Dolomite	Illite	Kaolinite	Chlorite	Others
1	31.70	2.20	4.60	52.40	1.91	0.46	0.36	6.38
2	36.80	2.90	5.30	46.60	3.02	0.34	0.59	4.45
3	33.80	1.60	3.60	51.80	3.59	0.46	0.46	4.69
Average	34.10	2.23	4.50	50.27	2.84	0.42	0.47	5.17