Tessera 3001-1. Villa de Bruñel (Quesada, Jaén, Spain)

A yellow-orange tessera from the mosaics of the Roman villa of Bruñel (Quesada, Jaén, Spain). Raman and petrographic analyses indicate the presence of calcite (CaCO3) containing fossils identified as globigerina and globorotalia, while X-ray fluorescence reveals a high concentration of Ca (90.79 wt%) and minor amounts of Si (4.03 wt%). The raw material used was, therefore, a calcareous sandstone rich in planktonic foraminifera. Its provenance can be traced to Upper Miocene sandy units within the Guadalquivir Basin.
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Dimensions

: 0.8 Centimeters

: 0.8 Centimeters

: 0.75 Centimeters

Materials

Stone

Temporal

: Roman

: 3rd-4th century AD

Spatial

  • : Villa de Bruñel
  • : Quesada, Jaén, Spain
  • : WGS84
 

Copyrights

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

Digital Resources

  • Tessera 3001-1. IUIAI-UJA
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
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  • Villa of Bruñel. General view IUIAI-UJA
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
    http://creativecommons.org/licenses/by-nc-nd/3.0/
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  • Villa of Bruñel. Mosaics IUIAI-UJA
    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 3001-1. Análisis Raman IUIAI-UJA
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
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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]
  • Tessera 1001-1. Thin section IUIAI-UJA
    Creative Commons - Attribution, Non-Commercial, No Derivatives (BY-NC-ND)
    Arquiberlab
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Activities

  • Archaeometric analysis

University Research Center for Iberian Archaeology

Raman Microscopy

Mineralogical analysis

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

Renishaw ‘in via’ Qontor Spectrometer coupled with a confocal Leica DM LM microscope (CICT, University of Jaén), equipped with a diode laser (785 nm, 300 mW), DPSS laser (532 nm, 50 mW) and a Peltier-cooled CCD detector, calibrated to the 520.5 cm-1 line of silicon.

X-Ray Fluorescence

Elemental analysis

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

Espectrómetro de fluorescencia de rayos X de energía dispersiva EDAX (modelo Eagle III)( CITI, Universidad de Sevilla). Está equipado con un tubo de rayos X microfocus con un ánodo de Rh, una lente policapilar para enfoque de rayos X y un detector de energía dispersiva Si-(Li) de 80mm2. La cámara de medida incorpora una bandeja motorizada para el posicionamiento de la muestra. Microscopio de alta resolución para posicionar la muestra a la distancia adecuada. Cámara con bomba de vacío para elementos de bajo número atómico (Z). Para un tamaño del área de medida de 300 μm se selecciona en el tubo de rayos X un voltaje de 40kV. La intensidad de corriente del tubo se adapta a cada muestra para optimizar la detección de los rayos X.

Petrographic analysis

Visual characterization (5X handheld magnifying glass) and reaction with HCl to determine its carbonate nature

Leica DM4P polarization microscope equipped with a Leica DFC450C camera.

 

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