Abstract: Rodingites observed in the serpentinites, at approximately 30 km east of Çelikhan, (Adıyaman - EasternTurkey) were formed by different degrees of transformation from basic segregations of gabbroic origin. Following thepetrochemical studies, it is concluded that the rodingitisation has «been developed by solutions created during the serpentinisation ,and which permit the metasomatism of calcium ,and other elements. A comparison between chemical analyses ofthe different parts of the rodingites studied ,and the ones of already known rodingites in Turkey, establishes that, duringrodingitisation, the quantities of CaO, Na2O, K2O, SiO2, A12O3 ,and MgO have more / less been modified.