The set of copper-exchanged mordenites with variations in Si/Al atomic ratio (6.5 and 10) and exchangeable counter-cations (Na ⁺, [NH ₄] ⁺, H ⁺) prepared by different methods (conventional and microwave assisted), has been studied. Application of nondestructive analytical methods with different depth vision, such as EDS and XPS, simultaneously with the ICP-OES method of bulk analysis has permitted to analyze the distribution of elements in the studied Cu-mordenites and to evaluate their depth profiling. XRD study confirms that the applied ion-exchange procedures do not damage the mordenite framework and no additional phases appear. The lattice parameter changes point out that all the copper is exchangeable. The process of copper-exchange runs parallel to dealumination reaction. ²⁷Al MAS NMR study confirms the local character of partial destruction of the zeolite framework in the samples obtained from H ⁺-mordenite. Based on the comprehensive analysis a three-ply structure of Cu-zeolite particles has been proposed.