Laboratory Measurement and Interpretation of the Changes of Physical Properties after Heat Treatment in Tight Porous Media

Table 2

Quantitative analyses of minerals by XRD.

Lithology	Content of minerals, %
	Clay mineral	Quartz	K-feldspar	Anorthose	Calcite	Dolomite	Siderite	Pyrite
Shale	39.96	41.15	3.12	5.12	2.91	4.11	0.00	3.63
Sandstone	24.90	72.89	0.01	0.13	2.06	0.01	0.00	0.00
Carbonatite	7.90	7.70	4.67	2.93	0.00	76.80	0.00	0.00
Mudstone	56.52	11.14	0.00	7.04	25.30	0.00	0.00	0.00