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Major ore deposits in the Kozuf metallogenic area, R. Macedonia

Abstract

The productive ore mineralization within the Kozuf metallogenic area, mainly, has been related to the Alpine metallogenic epoch while spatial and temporal has been spread during the Cretaceous stage and Pliocene period. During the Cretaceous metallogeny were formed several iron and nickel deposits related to the redeposited lateritic crusts developed over the Jurassic ultrabasic rocks (dunite, harzburgite, lherzolite). The most important lateritic crust mineralizations were determined in the Rzanovo ore deposit (40 Mt so 1.1% Ni), as well as occurrences at Studena Voda, Gradiste, Rakle and Nikodin. During the late Alpine metallogenic epoch in the Kozuf area were formed polymetallic Cu-Au-Sb-As-Tl-Pb- Zn mineralizations in Alshar and Dudica deposits, related to the Pliocene magmatism (6.0-1.8 Ma) and ring-radial structures related to that particular volcanism. Carlin-type gold (> 1 g/t Au), was determined in parts of the Alshar deposit

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