High pressure metaophiolite polished stone implements found in Hungary

Good quality high pressure (HP) metaophiolite rock types (e.g. Na-pyroxenite/jade, eclogite) suitable for making prehistoric polished stone implements were unknown among Hungarian findings for a long time. Nowadays they are still among the rarest types of polished stone implements found in Hungary in the respect of raw material. After the first discovery of Neolithic stone tools made of HP metaophiolites in the records of Hungarian archaeological assemblages, detailed petrological investigations of large stone implement collections revealed their presence in a relatively large number. According to our current knowledge, 25 HP metaophiolite stone implements are known as found in Hungary. Unfortunately, most of them are stray finds, but 11 pieces from four localities have a known archaeological context. They were mainly located in Transdanubia (except for one piece from Tiszántúl) and are mostly attributable to the Late Neolithic Lengyel Culture and secondarily to the Late Neolithic Tisza Culture. In this study, we used only non-destructive analytical methods (macroscopic observation, magnetic susceptibility measurements, non-destructive SEM-EDX, and Prompt Gamma Activation Analysis). As a result of this study, the prehistoric stone implements were classified into raw material types. Based on our data, the high pressure-low temperature (HP-LT) metaophiolite stone implements found in Hungary probably originated from the same raw material sources as the Italian HP-LT metaophiolite stone tools (sourcing from North-western Italy). According to the literature on the topic, both primary (Western Alps in the vicinity of the Monviso in Piedmont or the Voltri Massif in Liguria) and secondary occurrences (in Quaternary deposits of the rivers Po, Staffora and Curone) are potential sources. These analyses confirmed the existence of long-distance trade routes connecting the Po Valley and its vicinity with the Carpathian Basin during the V th Millennium BC.