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The rich copper ore deposits in the eastern Alps have long been considered as important sources for copper in prehistoric central Europe. However, the role that each deposit played is not clear. To evaluate the amount of prehistoric copper produced from the various mining regions, we attempted to link prehistoric metal artefacts with copper ores based on the geochemical characteristics of the ore deposits that were exploited in ancient times. Alongside the usage of ores as shown by the finished products, the production aspects, the quantity and variation over time must also be considered. Recent archaeological investigation has allowed these datasets to be combined in order to show the importance of one of the largest Bronze Age mining fields in Europe. More than 120 ore samples from the well-known mining regions of Mitterberg, Viehhofen, and Kitzbühel were analysed for lead isotope ratios and trace element concentrations. These results were combined with analytical data generated by previous archaeometallurgical projects in order to compile a substantial database for comparative studies. In the Early Bronze Age, most metal artefacts were made of copper or bronze with fahlore impurity patterns, and most examples from this period match the fahlore deposits in Schwaz and Brixlegg. At the end of the Early Bronze Age, a new variety of copper with low concentrations of impurities appeared. The impurity patterns of these examples match the ores from the Mitterberg region. Later, in the Middle Bronze Age, this variety of copper almost completely replaced the fahlore copper. In the Late Bronze Age, the exploitation of the ores changed again and copper with a fahlore signature reappeared. The reason for the renewed copper production from fahlores might have been a decline of the chalcopyrite mines. But it was more likely due to the fact that the rising demand for copper could no longer be met by the chalcopyrite mines alone. The examples from the Early Iron Age show no fundamental changes in metal composition. The copper metallurgy in the Early Iron Age is based on the traditions of the Late Bronze Age

Bronze Age Copper Produced at Mitterberg, Austria, and its Distribution