Main-component geochemistry and platinum-group-element potential of Turkish chromite deposits, with emphasis on the Mugla area
Chromite deposits in Turkey are situated in six different major areas, as are reninants of the Neo-Tethyan oceanic crust. Sizes of the mineralization vary from tens of tons to a few thousand tons. Alpine-type structures and textures are very common in almost all of the mineralizations. Chromites of Turkey generally are categorized as "aluminum chromite" and "ferrichromite" on ternary major-oxide (Fe(2)O(3)-Al(2)O(3)-Cr(2)O(3)) component diagrams. Based on Cr/Cr+Al and Mg/Mg+Fe ratios of chromite mineralization in Turkey, ores in general formed by low to high degrees of partial melting of magma under conditions of low to high oxygen fugacity, depending oil magma location in the ultramafic suite. In addition, no relationship between main-component geochemistry and stratigraphic position of chromites in tectonites has been observed. Platinum-group-element concentrations are only elevated in chromite mines around the Dalaman-Fethive district in the Mugla chromite area. Chromite mines along both sides of the Dalaman River and the river itself are the most promising target areas in terms of PGE exploration.