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Abstract
The Murgul deposit is a copper-rich VMS system at Murgul, Turkey. It has beeninterpreted as a Kuroko-type VMS system, and is one of several VMS and vein depositsthroughout the Eastern Pontides. The massive sulfide of the Murgul deposit has been removedby mining, but remains profitable because the underlying stockwork is significantly mineralized.Little isotopic research has been conducted on this deposit or others located in the region. Sulfurand oxygen stable isotope data constrain fluid temperature and source for a better understandingof the deposits origin. Chalcopyrite-pyrite pairs yield equilibrium temperatures ofapproximately 350oC. Quartz and illite were determined to be in disequilibrium and unable toprovide temperature data, but the illite permits calculation of a fluid source 18O of 8-11o/oo.These data suggest that the fluids that produced Murgul were likely derived from seawater, andthe deposit is best interpreted as a VMS deposit.