ABSTRACT: In the world, platinum-group metalls (Pt, Pd, Ir, Os, Ru, Rh) are found as a primary in the magmatic liquation, early magmatic and late magmatic deposits, They are present as secondary in the placer deposits. As Pt, Ir, Dsthree of them are more dominant in basic rocks, however Pd and Pt sulfure are more abundant in ultrabasic rocks, Distrubition of platinum-group metalls in stratiform and podiform chromite deposits of late magmatic stage show differences. Although Cr2O3 are present more in podiform deposits, platinum-group metalls less in the same deposits, but stratiform deposits show opposite state.All platinum-group metalls have been produved in a few countries (Canada, S. Africa, Russia, Colombia) as a 98 percent of the world production. Platinum-group metalls (Pt, Pd, Ir, Os, Ru, Rh) are present less in chromite deposits ofTurkey and they are not economic,