We present the electrical characterization of a zeolite plate and its composites prepared by using zeolite and copper powders. The experimentally obtained electronic and ionic conductivities and their interactions are discussed. It is established that electrical properties of the powder of natural zeolite which included 10% of the metallic Cu powder is fundamentally changed. However, the non-steady state decaying current in a pure zeolite powder is replaced with the steady state current, strongly dependent on the gas pressure. It is assumed that there is the gas discharge ignition in the nanopores of zeolite, initiated by electrons emission from Cu metal particles. Published by Elsevier Ltd.