Minerology and geochemistry of the chromite deposits of west and east Kef (Guleman-Elazığ)

Guleman area which is 90 km SE Elazığ city settlement, is one of the most important chrome district of Turkey. Guleman Chromite deposits are divided into 4 major groups. These are Gölalan, Pütyan, Rut-Lasir-Ayıpınarı and Kefdağ-Kapin-Şabata.In the area, autuchtonous Lice Formation, allochtonous Guleman Group, Hazar Complex and Maden Complex make up the Lithologies. Lower Miocone aged Lice Formation is made of alternate layers of sandstone, limestone, shale and marl. Jurassic-Cretaceous Gulemen Group corsist generaly of dunite, harsburgite and their alteration products serpentinite. Upper Measterichtian-Lower Eocene Hazar Complex is composed of volcanic interbeddet in places, alternates of sandstone, claystone, shale marl and clayeylimestone. Litologies of Middle Eocene Maden Complex are sandstone, limestone, mudstone, pillow lavas, andesite-basalt flows agglomeate, tuff and Nummilitie limestone.Kef Chromite mineralizations are Alpin (podiform) type and associated with basic-ultrabasic rocks. Choromite mineralizations occur in harzburgite and dunite. These rocks are serpentinited in places. The ore bodies have generally streak and lens form. The ore bodies have E-W strike directions and S dips with angles about 80-850. The thicknes vary between 1 m and 40 metres, along the strike and dip directions. The ore is generaly massive but dissemineted and also common. The chromite levels are cut and displaced by small size faults.The dominant mineral is chromite and very scarcely minure crystals of Ni minerals. The chromite grains are unhedral and fractured by tectonic movements.Cr2O3 contents of studied samples vary between 53,04 and 29,17 and mean value is 39,00 .Key words: Ultrabasic, Chromite, Podiform Chromite, Alpin Type Chromite, Orthomagmatic.