Experimental Study on Physicomechanical Properties of Deep Sandstone by Coupling of Dry-Wet Cycles and Acidic Environment

Table 1

EDS analysis results.

EDS Spot 1			EDS Spot 2
Element types	Weight (%)	Relative atomic number	Element types	Weight (%)	Relative atomic number
C	11.16	9.7	C	13.40	10.9
O	36.33	22.7	O	42.01	26.3
Mg	5.67	2.3	Al	1.26	0.4
Al	1.06	0.4	Si	40.73	14.5
Si	1.26	0.4	S	2.39	0.7
S	2.07	0.6	Ca	0.21	<0.1
Ca	0.38	<0.1	—	—
Fe	42.07	7.5	—	—