Tessera P-12, Cástulo (Linares, Jaén, Spain)

White stone tessera from the Mosaic of Los Amores, located in Building D of Area 2 at the archaeological site of Cástulo (Linares, Jaén, Spain). Raman analysis shows the calcite (CaCO3) spectrum. Elemental analysis indicates a high concentration of CaO (81.90 wt %), suggesting the calcareous nature of the tessera. Both results point to the use of limestone in its manufacture.
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Dimensions

: 1.2 Centimeters

: 1 Centimeters

: 1.1 Centimeters

Materials

Stone

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)

Digital Resources

  • Tessera P-12 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/
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  • Location of the main areas and cemeteries in Cástulo. 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/
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  • Mosaic of 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/
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  • Tessera P-12. Raman analysis IUIAI-UJA
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
    [ver más...] [ver menos]
  • IUIAI-UJA
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
    [ver más...] [ver menos]

Activities

  • Archaeometric analysis

University Research Center for Iberian Archaeology

Raman Microscopy

Mineralogical analysis

The tessera was sectioned to expose fresh, unaltered cross-section

Portable equipment: BWS445-785S innoRam™ Raman spectrometer (B%26WTEK, Inc., Newark, USA) with a 785 nm excitation laser (maximum power of 300 mW) and a 4.5 cm-1 spectral resolution. The Raman microprobe can be mounted on a tripod with motorized XYZ axis (MICROBEAM S.A, Barcelona, Spain) or on a microscope sampling stage (B%26WTEK, Inc., Newark, USA).

X-Ray Fluorescence

Elemental analysis

The tessera was sectioned to expose fresh, unaltered cross-section

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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