Ceramica romana din asezarea vadastra (original) (raw)

Abstract

Eight Roman ceramic shards discovered in the Vadastra settlement, placed in the South of Oltenia, were examined. They belonging to Early Roman period (27 -284 AD) and results proceed from originated common vessels (bowls,pitchers) and building ceramics (roofing tiles, bricks) respectively. After a 48 hours immersion in water were determined semivitrfication characteristics water absorption of 9.5 - 22 %, apparent density of 1.55 - 1.94 g/cm 3 and apparent porosity of 18.4 - 34.3 %. By fluorescence RX two samples were analysed. Also, by XRD have been identified: α- quartz very well crystallised, solid solutions of feldspars weak crystallised, traces of micas, illite, calcite and occasionally dolomite. The fine/coarse texture of ceramic shards (on the surface and in the breaking) has examined by optical microscopy in the reflected light. In his ceramic matrix, beside of quartz crystals agglomerate and pores, have been identified hematite and magnetite areas and rarely grains of calcite and lamellas of micas. Colour of samples (external/internal) has been estimated spectrocolorimetric measurements in the Hunter Lab system (L*a*b*C*h*, dominant wavelength). Finally, have been proposed the possible ceramic manufacturing technologies employed.

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