Ceramic vessel 139-8. Oppidum Puente Tablas

Ceramic vessel located beside the entrance of the building B of the palatial complex of the Iberian oppidum of Puente Tablas (Jaén, Spain). Oxidising atmosphere. Decoration with black and red lines. The red color is obtained using hematite (Fe2O3). The black color is manufactured using a oxide of manganese identified by MRS as bixbyite/hausmannite (Mn2O3/Mn3O4) and jacobsite (MnFe2O4). Bixbyite/hausmannite are the result of the transformation of pyrolusite when firing temperature is set above 450ºC and below 900ºC. The presence of jacobsite means a temperature reaching the 900ºC. Analysis by EDXRF of the black color confirms the presence of Mn: 1.36% wt of Mn versus 0.05% wt in the ceramic paste

New product

Dimensions

: 3.25 Centimeters

: 2.5 Centimeters

Materials

pottery

Temporal

: Iberians, Iberian

: 4th ct. BC

Spatial

: Oppidum de Puente Tablas

: Puente Tablas (Jaén, Spain)

: WGS84

 

Copyrights

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

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 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 the red 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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