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  • Univ. La Sapienza  (1)
  • maajournal  (1)
  • 2020-2024  (2)
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  • 1
    Publikationsdatum: 2023-02-23
    Beschreibung: New investigations carried out on lead stannate (Pb2SnO4) and lead antimonate (Pb2Sb2O7) in yellow mosaic glassy tesserae from archaeological sites of Sicily (Taormina; Lipari, Tusa and Piazza Armerina), dated early than the 4th century AD, allow to confirm the presence of lead stannate in ancient glass dated before the 4th century. The two compounds have been used either as glass opacifiers and colorants. The different refractive index between fine crystals of these compounds and the amorphous glassy matrix, in which they are immerged, prevent the complete light transmittance, giving the typical opaque appearance to the glass. While lead antimonate was used to produce opaque yellow glass from the beginning of glass production up to the Roman period, it was replaced by lead stannate from about the 4th century AD up to the end of the Roman period. Although until today only Lahil et al. (2011) reported the presence of lead stannate in the glass tesserae dated before the 4th century AD, our new results confirm its presence in the investigated yellow tesserae from several mosaics of Sicily dated early than the 4th century AD
    Beschreibung: Published
    Beschreibung: 31-44
    Beschreibung: 7SR AMBIENTE – Servizi e ricerca per la società
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Publikationsdatum: 2023-10-13
    Beschreibung: Submarine surveys, started in 2008 during the preliminary excavations preceding the construction of a new pier in the port of Lipari Island (Italy), brought to light the presence of large submerged remains, dated to the Roman age, in the base of typological features of the related pottery fragment styles. The archaeological discoveries included the find of structural elements - interpreted in the literature as part of a monumental building - located at the wharf terminal. Four of these structural elements, made up of volcanic rocks, which are now stored at the Lipari Museum, have been examined both from analytical and architectural points of view. To define the provenance of the rocks, petrographic and mineralogical investigations have been performed on the collected samples. The results obtained indicate that the rocks could be traced to the cordierite lava rocks outcropping at Fuardo Valley, in the SW area of the Lipari Island. The use of these rocks as building material was already attested for other artefacts found at Lipari and Messina (Sicily) and at Lamezia (Calabria), but no historical sources refer to any mining activities. However, the presence of working traces observable at Fuardo Valley and Pulera districts and the overall collected information suggest that the cordierite-lava flow was extensively used as stone quarry during historical times. From the stylistic point of view, the studied structural elements made with the Fuardo stone show architectural features that allowed defining them as column bases dating to the Roman Imperial age.
    Beschreibung: Published
    Beschreibung: 183-194
    Beschreibung: 7SR AMBIENTE – Servizi e ricerca per la società
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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