Ceramic vessel 0110. Oppidum Puente Tablas

Ceramic vessel type Real from the Iberian oppidum of Puente Tablas (Jaén, Spain). Reducing atmosphere. Post-firing decoration with red and yellow lines on a back blackgroung. The red color is manufactured with an intentional or involuntary mixture of hematites (Fe2O3) and goethite [FeO (OH)]. The yellow color is obtained with goethite [FeO (OH) · nH2O]. The black background is made with amorphous carbon.
The analysis by EDXRF shows very high percentages of Fe in the red decoration (38.37% wt) and in the yellow decoration (55.09% wt), which demonstrates the direct use of iron ore in high concentration.
The hydrated goethite and the amorphous carbon experiment with the increase of the temperature serious modifications that affect the color. All this indicates therefore that its application is after the firing.

New product

Dimensions

: 5.5 Centimeters

: 5 Centimeters

Materials

pottery

Temporal

: Late Bronze

: 8th-7th ct. BC

Spatial

: Oppidum de Puente Tablas

: Jaén, Spain

: WGS84

 

Copyrights

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

References

Parras, D.; Vandenabeele, P.; Sánchez, A.; Montejo, M.; Moens, L. y Ramos, N. (2010): “Micro-Raman spectroscopy of decorated pottery from the Iberian archaeological site of Puente Tablas (Jaén, Spain, VII-IV century b.C.)”. Journal of Raman Spectroscopy, 41: 68-73.

Ruiz A. y M. Molinos (coord.) (2015): Jaén, tierra ibera. 40 años de investigación y transferencia. Universidad de Jaén.

Digital Resources

Activities

Archaeometric analysis

Physical-chemical analysis

Ceramic. Analysis of decoration

University Research Center for Iberian Archaeology

Raman Microscopy

Mineral analysis of the red, yellow and black decoration

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

Micro-Raman Spectroscopy (MRS)

Renishaw ‘in via’ Reflex Spectrometer coupled with a confocal Leica DM LM microscope (CICT, University of Jaén), equipped with 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 of vthe red, yellow and black decoration

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

Energy dispersive X- ray fluorescence (EDXRF);

EDAX (model Eagle III) fluorescence spectrometer (CITI, University of Seville). This spectrometer is equipped with a microfocus X-ray tube with an Rh anode, a polycapillary lens for X-ray focussing, and an 80 mm2 energy dispersive Si-(Li) detector. 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 300 μm was chosen at an operating X-ray tube voltage of 40 kV. The tube current was adapted for each sample in order to optimise the detection of X-rays

 

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