Chemical and isotope characterization of lead finds at the Santa Barbara nuraghe (Bauladu, Sardinia) |
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| Authors: | A Cincotti L Massidda U Sanna |
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| Institution: | Dipartimento di Ingegneria Chimica e Materiali, Università degli Studi di Cagliari, Piazza d’Armi, 09123, Cagliari, Italy |
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| Abstract: | Twenty lead finds, unearthed in Late Bronze–Early Iron Age levels at the Santa Barbara nuraghe situated at Bauladu in Sardinia (Italy), have been examined. Their chemical composition has been determined using the ICP-MS plasma-mass technique (Cu, Fe, As, Ag, Sn, Sb, Bi, Zn, Cs, Tl, Mo, Cd, In, Te, W, Th, U, Li, Se). Lead isotope ratios (208/206, 207/206, 206/204) have also been determined. The results are discussed in relation to the mineral source and some aspects of the metal extraction processes. The finds are composed of high purity lead obtained using a smelting at low temperature. Based on the isotope ratios it has been possible to establish that the metal originated from Sardinian ore deposits type. |
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| Keywords: | Archaeometry Lead isotope Chemical composition Bronze Age Sardinian galena ores |
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