Tarquinia: analysis of the metal objects from the excavation of Pian di Civita: lituus, axe and shield – First campaign
The three objects from the excavation of Pian di Civita were analysed by X-ray fluorescence (XRF) spectroscopy in the Archaeological Museum of Tarquinia, in a totally non-invasive modality and without any treatment of the surfaces, in order to characterize the compositions of the metal alloy. The objects were observed with the aid of a video microscope operating at magnification 50x and 200x.
The analysis was performed by Giorgia Agresti and Claudia Pelosi, in the presence of the archaeologist Beatrice Casocavallo.
Tarquinia: analysis of the metal objects from the excavation of Pian di Civita: lituus, axe and shield – Second campaign
Due to the presence of oxidation layers on the surfaces of the objects, it was necessary to remove these layers in order to obtain real data on the composition of the alloy. In fact, as XRF analyses the surfaces, the measurements are influenced by the presence of materials superimposed to the original. For this reason, further analysis was performed by XRF spectroscopy after the removal of a little area (about 1 mm) of oxidation layers. On that occasion, the radiography of the lituus was also performed by Claudio Falcucci – M.I.D.A. society from Rome.
The three objects were examined in the Archaeological Museum of Tarquinia.
The XRF analysis was performed by Giorgia Agresti and Claudia Pelosi, with the support of Emiliano Li Castro. The removal of the oxidation layer was performed by the restorer Emanuele Ioppolo.