Tessera 0013008708-M1 (Cástulo, Linares, Spain)

Green vitreous paste tessera from the Amores Mosaic of building D in area 2 of the Cástulo archaeological site (Linares, Jaén, Spain). The MRS analysis shows a characteristic profile of a soda-lime silicate glass with bands around 500 cm-1 and 1000 cm-1, and calcium antimonate (Ca2Sb2O7) as an opacifier agent (bands at 235, 324, 335, 669 cm -1). EDXRF analysis records a high percentage of Si and Na characteristic of this type of glass tessera (mean values of 62.43 wt% and 15.74 wt% respectively). The chromophore that confers the dark green color is Cu (II), as can be seen from the Cu values obtained in the EDXRF analysis (mean value of 5.20 wt %).

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Dimensions

: 1 Centimeters

: 1 Centimeters

: 1 Centimeters

Materials

glass paste

Temporal

: Roman

: Late 1st ct.-2nd ct. AD

Spatial

: Cástulo

: Linares, Jaén, Spain

: WGS84

 

Copyrights

Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)

References

Sánchez, A, Tuñón, J., Montejo, M., Amate, P., Ceprián, B., Rousaki, A., Costa, M.,Saelens, D., Lycke, S.,Vandenabeele, P. (2021): “First insights into the archaeometric analysis of the Los Amores Mosaic in Cástulo (Linares, Spain): the Judgement of Paris”. Heritage Science, 9.

Castro, M. (coord.) (2014): Cástulo en movimiento: Avances del proyecto Forvm MMX (2011-2012). Revista Siete Esquinas, 6. Número monográfico.

Digital Resources

  • Tessera 0013008708-M1 Conjunto arqueológico de Cástulo-Forum MMX

    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
  • Location of the main areas and cemeteries in Castulo Conjunto arqueológico de Cástulo-Forum MMX

    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
  • Mosaico de los Amores Conjunto arqueológico de Cástulo-Forum MMX

    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
  • Raman spectrum of the tessera Instituto Univesitario de investigación en Arqueología Ibérica. Universidad de Jaén.

    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
  • Instituto Univesitario de investigación en Arqueología Ibérica. Universidad de Jaén.

    Mean values

    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/

Activities

Archaeometric analysis

Physical-chemical analysis

Tessera. Composition analysis

University Research Center for Iberian Archaeology

Raman Microscopy

Mineral analysis;

Non destructive. Surface cleaning. Sample pretreatment is not required. Direct measurement.

Micro-Raman Spectroscopy (MRS)

Renishaw ‘in via’ Qontor Spectrometer coupled with a confocal Leica DM LM microscope (SCAI, University of Málaga), equipped with a solid state laser (473 nm, 25 mW), a Nd:YAG laser (532 nm, 50 mW) and a diode laser (785 nm, 300 mW), and a Peltier-cooled CCD detector, calibrated to the 520.5 cm-1 line of silicon.

X-Ray Fluorescence

Elemental analysis

Non destructive. Surface cleaning. Sample pretreatment is not required. Direct measurement.

Energy dispersive X-ray fluorescence (EDXRF)

An energy dispersive X-ray microfluorescence spectrometer (M4 Tornado, Bruker) (CICT, University of Jaen). This spectrometer is equipped with a microfocus X-ray tube with an Rh anode, a polycapillary lens for X-ray focussing, and a 30-mm2 energy dispersive detector (SDD). The sample chamber incorporates an XYZ motorized stage for sample positioning. A high resolution microscope is used to position the sample on the desired distance from the polycapillary. To increase the sensitivity of the low Z elements, the sample chamber can be brought under vacuum. For the analysis of the samples, a spot size of 25 μm was chosen at an operating X-ray tube voltage of 50 kV and intensity of 600 μA. The tube current was adapted for each sample in order to optimise the detection of X-rays.

 

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