Detailed studies on the characteristic behaviour of gamma radiation induced luminescente emission for different natura1 barite samples collected from the Egyptian deserts, noted as "black", "yellowish" and "colourless" barites; and laboratory prepared synthetic ones of equivalent compositions have been given. The results showed an equivalent luminescente characteristic behaviour for both natura1 and synthetic ones. The optimum condition of the excitation energy necessary to induce the luminescente emission of the colour center depends on the type of the dopant activators in the basic matrix of barite (BaSO,). The intensity of the excitation energy varies linearly with the samples gamma absorbed dose over the range 10Β°-104Gy. The sensitivity of the gamma radiation induced luminescente presents a linear relation with the samples gamma absorbed dose over the range 10Β°-IO' Gy for both natura1 "n" and synthetic "s" barites. More detailed studies concerning the relation between the excitation and radiophotoluminescence "luminescente emission" of barite with the configuration farms of the electronic charge (+ve and -ve ions) imperfections induced by the effect of the doped activators in the BaSO, network are discussed.