The ore deposits of the Abuta mine are bedded bodies composed of iron sulphide ore associated with sulphur and limonite in the Pliocene andesite lava flows. The ore consists of pyrite, marcasite, melnikovite, sulphur, goethite, hematite and hydrohematite intimately accompanied by chlorite, saponite, montmorillonite, sericite, kaolin, alunite, jarosite, opal, cristobalite, quartz, gypsum, barite, cinnabar, rutile, siderite and melanterite. The alteration of wall rocks, such as silicification, alunitization, kaolinization, montmorillonitization, saponitization and chloritization shows zonal distribution around the ore bodies. This zonal arrangement is probably due to the difference in the solutions which followed the same path at different times. The relation between mineralization and the various stage of alteration in time and space has been stressed in this paper.