Abstract: The tin bearing Sulucadere lead-zinc mineralisation is of hydrothermal-metasomatic origin and occurs in the Bolkar marble. The hydrothermal solutions were brought about by the quartz-prophyry veins of the Horoz granodiorite. The primary ore minerls respectively are sphalerite, galena, pyrite, fahlerz, chalcopyrite, arsenopyrite, marcasite, stannite, bpumonite-seligmanite, pyrrhotite, siderite, ankerite, navite-gold, idaite and Ag-sulpho salts. Surface alteration of these minerals prouced the following secondary minerals.Covellite, chalcocite, limonite, malachite, azurite, anglesite, cerassite, smithsonite, hydrozincite, psilomelane, skorodite, etc. The majorgangue minerals are calcite, dolomite, quartz, epidote, sericite, muscovite and chlorite. Sericite, muscovite, chlorite, rutile and anatasehave been obtained from the limestone wall rocks.