Evolution Mechanism of Mesocrack and Macrocrack Propagation in Carbonaceous Mudstone under the Action of Dry-Wet Cycles

Table 1

The mineral component of carbonaceous mudstone.

Mineral composition	Illite	Kaolinite	Quartz	Feldspar	Calcite	Pyrite	Mica
Content (%)	18.8	21.4	41.5	5.8	7.6	2.1	2.8