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Minerals, Volume 14, Issue 7
July 2024 - 103 articles
Cover Story: Volcanic millstones are common in archaeological sites. Their characterisation is performed petrographically, but their provenance is often studied by comparing geochemical data from reference outcrops using biplots or multivariate analysis. In this paper, volcanic stones from two sites (Iulia Libica, Spain, and Sidi Zahruni, Tunisia) are studied. New strategies to quantify petrographic elements and to determine the provenance of the tools are presented. In particular, supervised machine learning has been tested using the GEOROC database as a source of labelled data. The Tunisian materials have been identified as basalts from Pantelleria (Italy). In contrast, the provenance of the Spanish materials remained unknown. The results illustrate the advantages and limitations of all the examined methods. View this paper
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Minerals - ISSN 2075-163X