Tessera 124. Tethys mosaic, Marroquíes Altos (Jaén, Spain)

Dark brown tessera belonging to the Thetys mosaic at the Marroquíes Altos Archaeological Site (Jaén, Spain). It is located on the outline of Thetys's face. X-ray fluorescence analysis indicates a high Ca content, significant amounts of Si, Al and K, along with smaller amounts of Fe and Ti. The elements Si, Al, and K constitute the principal components of numerous clay minerals (such as kaolinite or illite), which are fundamentally aluminium silicates. The presence of Fe and, to a lesser extent, Ti, is consistently observed as trace elements or impurities within these argillaceous minerals or associated oxides/hydroxides. Consequently, it is inferred that the non-carbonate fraction of these tesserae is primarily composed of argillaceous material, thereby validating the proposal of marly limestone as raw material for their fabrication
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Dimensions

: 1 Centimeters

: 1 Centimeters

Materials

Stone

Temporal

: Roman

: 4th century AD

Spatial

  • : Marroquíes Altos. Tethys Mosaic
  • : Jaén, Spain
  • : WGS84
 

Copyrights

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

Digital Resources

  • Tessera 124
    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 124 on the outline of Thetys's face
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
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  • Tethys mosaic
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
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  • 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

  • Achaeometric analysis

University Research Center for Iberian Archaeology

Raman Microscopy

Elemental analysis

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

Portable Olympus Innov-X Delta Premium X-ray fluorescence spectrometer equipped with a rhodium (Rh) anode X-ray tube and a 20 mm2 SDD detector. An aluminum (Al) filter was applied to measure high-Z elements (from Fe onward) using a voltage of 40 kV and a current of 38.7 µA. Without filtering (low-Z elements), a voltage of 10 kV and a current of 50.8 µA can be applied. Measurements were performed in air for 150 s. The X-ray excitation beam was collimated through a window with dimensions of 3×3 mm2

 

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