  The novel $Sr_5Pb_3ZnO_{12}$ oxide was synthesized by the solid-state
reaction method. The crystal structure was studied by means of the powder x-ray
diffraction Rietveld method and was found to be similar to 3 other previously
known $Sr_5Pb_3MO_{12}$ compounds (M = Co, Ni, Cu). Crystals of several hundred
microns in size of the new phase were grown in molten sodium chloride and
imaged using confocal optical and scanning electron microscopy. Electrical
properties were studied using the impedance spectroscopy technique. It was
found that $Sr_5Pb_3ZnO_{12}$ is a dielectric material with rather high
relative permittivity ($\epsilon_r$ = 22 at 300K) and with activation energy of
the dielectric relaxation process $E_A$ = 0.80(4) eV. The heat capacity studies
reveal the Debye temperature $\Theta_D$ = 324(1) K.
