Abstract: Batı Kef chromium deposit is located just over the tectonite harzburgite, lower member of t lie Guleman ophiolite assemblageand the base of cumulate d unites. Considering its dimensions, it is among the major chromium deposit of Türkiye.The tectonites having porphiroclastic texture and forming thefootwall of the deposit are represented by harzburgites and occasionally by dunitesy while the cumulates having adcumulate texture and forming the hanging wall, gang and partings in the orebody are represented by dunites, harzburgites and Iherzolites.The general strike and dip of the deposit is N59E/54SE. The outcrop occurs between 1448-1580 m levels and can be followed1000 m along the direction. At the south-west end it thins out by primary contact and in the north-east it is terminated by great Keffault. The thickness varies cosiderably reaching a maximum of 52 m. The drill holes indicate thai the deposit extends to 1153 m level. The orebody is occasionally divided in two branches. The upper branche is poor in chromium and probably formed at a laterstage.The ore shows a disseminated texture. The relative quantitative variations of the olivine and chromite results in layering parallelto the general setting of the deposit. At the bottom of the orebody, some massive layers up to 1 m thick can be seen.The deposit is divided in  two major tectonic slices by an important reverse oblique sinistral slip fault (KOT Fault) having a general setting ofN55El76NW. Several minor reverse faults with general strike of NW-SE and dip to NE, and some normal faults having no apparent systems result in smaller tectonic slices within the orebody. Based on the surface and drift geology and drill hole data and using cross-sections method, the Batı Kef chromium deposit proven resenes are calculated as 7.6 million tons with an average grade of 30,06% Cr2O3.