The podiform chromitites in the Dagküplü and Kavak mines, Eskisehir ophiolite (NW-Turkey) : genetic implications of mineralogical and geochemical data - Uysal, I. (Karadeniz Technical University. Department of Geological Engineering) ; Zaccarini, F. (University of Leoben. Department of Applied Geological Sciences and Geophysics) ; Sadiklar, M. B. (Karadeniz Technical University. Department of Geological Engineering) ; Tarkian, M. (University of Hamburg. Institute of Mineralogy and Petrology) ; Thalhammer, O. A. R. (University of Leoben. Department of Applied Geological Sciences and Geophysics) ; Garuti, G. (University of Modena and Reggio Emilia. Dipartimento di Scienze della Terra)