FE ISOTOPE COMPOSITIONS OF MAGNETITE FROM THE BAFQ DISTRICT, IRAN

Iron oxide-apatite (IOA) and Iron oxide-copper-gold are crucial mineral deposit types with similar tectonic settings. The Bafq mining district is an Iron oxide-apatite in central Iran. Also known as “Kiruna-type” magnetite – apatite deposit belongs to the early Cambrian Kashmar-Kerman volcano-plutonic arc. It consists of numerous important Kiruna-type iron oxide-apatite deposits like including Chadormalu, Choghart, Chahgaz, Esfordi, Lake-Siah, Gazestan, Se-Chahoun, Mishdovan, Anomaly 14 and 21A. The aim of the research was to support the magmatic model for the formation of Bafq mining district by measuring iron isotopes (δ⁵⁶Fe (‰)) of iron ore samples from Bafq. For the experiment, 20 magnetite samples from XX different deposits of Bafq were analyzed. The results of the experiment indicated that the δ⁵⁶Fe (‰) from Bafq was slightly greater than the other previously average measured values of δ⁵⁶Fe (‰) from Bafq at 0.66 per mil which slightly greater than average concentration in IOA (0.44 ppm) and IOCG (-0.08 ppm) deposits from all around the world. Thus, it can be concluded that the formation of IOA deposits of the Bafq mining district is magmatic in origin.