Experimental Study on Unsteady Radon Exhalation from the Overburden Layer of the Uranium Mill Tailings Pond under Rainfall

Table 1

Main mineral compositions of test materials.

Test material	Mineral composition content/%
	SiO2	Al2O3	K2O	Fe2O3	Na2O	TiO2	CaO	Others
Uranium tailing	85.250	6.180	3.180	1.630	0.418	0.371	0.276	2.695
Soil	51.672	16.497	4.021	8.516	0.563	0.563	14.078	4.090