ABSTRACT: The existan.ce of suhphide ore deposits of Cyprus has been, known since the ancient times.. These ore deposits are placed within the pillow lavas which make the uppermost sequence of the Upper Cretaceous Troodos Massif... various giophysical methods have been used by many research, warkers to investigate the general structure of the region, and to locate ore bodies. jSpcept the electrical methods, they haven`t been successful to locate sulfide^ ore bodies because the lack of contrast between the ore bodies and the country rocks. The magnetic properties of the pillow lavas which are made of thoeilitic basalts,, are considerable. Magnetic an.om.ali.es are .associated, with the pillow lavas where the positive1 values are göen by the thick piles of these volcanic series. There is no direct relationship between ten ore deposits and the magnetic anomalies. But there are negative magnetic anomalies over the mina.ral.ized zones and. the gossans. Also the reason of these .negative anomalies may be due to the gabbros or similar- intrasives which can be the cause of mineralization.