[en] Interactions of redox sensitive elements with common Finnish rocks were studied in the laboratory under oxic and anoxic conditions. Sorption and diffusion of technetium, uranium, plutonium and neptunium were studied in drill cores of granites and gneiss. Also carbon was studied under oxic conditions. Cylindrical drill core cup samples and plane surfaces sawed from drill cores were exposed for periods from six to eighteen months to synthetic ground water to which Tc-99, U-233, Pu-236, Np-237 or C-14 as H¹⁴CO₃^- had been added. Synthetic granitic ground water was used in all experiments. In comparative studies for uranium also carbonate rich synthetic bentonite water was used under anoxic conditions. Technetium, uranium and neptunium were transported effectively under both oxic and anoxic conditions. Transported species of these elements were found throughout the rock matrices investigated. The measured apparent diffusivities for neptinium under oxic conditions were 2.7 x 10^14- m²/S for tonalite and 3.0 x 10^-13 m²/S for rapakivi granite. The range of D_a-values for neptunium under anoxic conditions was (1.4-9.6) x 10^-14 m²/S. For uranium the range of D_a-values under oxic conditions was (3.6-5.7) x 10^-14 m²/S; under anoxic conditions it was (1.1-4.3) x 10^-14 m²/S in granite ground water and (1.8-5.3) x 10^-14 m²/S in bentonite water. The ranges of measured D_a-values for technetium varied 1.8x10^-15-2.3x10^-13 m²/S under oxic conditions and 2.3x10^-15-2.3x10^-14 m²/S under anoxic conditions. The migration of plutonium was slow in all samples. The range of measured apparent diffusivities of plutonium under oxic conditions was from 2.7x10^-15 to 2.4x10^-14 m²/S. Under anoxic conditions the measured D_a-values were 2.7x10^-15 m²/S for rapakivi granite and 3.5x10^-15 m²/S for tonalite