Main-Component Geochemistry and Platinum-Group-Element Potential of Turkish Chromite Deposits, with Emphasis on the Mugla Area
2006; Taylor & Francis; Volume: 48; Issue: 3 Linguagem: Inglês
10.2747/0020-6814.48.3.241
ISSN1938-2839
AutoresAli Uçurum, Osman Koptagel, Paul J. Lechler,
Tópico(s)earthquake and tectonic studies
ResumoChromite deposits in Turkey are situated in six different major areas, as are remnants 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 majoroxide (Fe2O3-Al2O3-Cr2O3) 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 on 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-Fethiye 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.
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