Effect of High Temperature (600°C) on Mechanical Properties, Mineral Composition, and Microfracture Characteristics of Sandstone

Table 2

XRD analysis results.

Rock mineralogy	Weight (%) room temperature	Weight (%) 600°C
Quartz	44.0	46.5
Plagioclase	32.9	31.4
Total clay	18.9	5.7
Calcite	3.3	2.8
Orthoclase	0.9	0.6
Other		13.0