R. Manca, E. Tartaglia, C. Ruberto, M. Marini, L. Chiarantini, A. Gueli, S. Pasquale, P.A. Mandò, F. Taccetti, M. Benvenuti, (2019). Authentication study of maiolica from the Museo Nazionale del Bargello, Florence (Italy): The possible contribution of non-invasive archaeometric analyses. Abstract..., 2019
S01-INNOVATIVE PROCESSING AND SYNTHESIS-Invited Lectures 5 S01-INNOVATIVE PROCESSING AND SYNTHESI... more S01-INNOVATIVE PROCESSING AND SYNTHESIS-Invited Lectures 5 S01-INNOVATIVE PROCESSING AND SYNTHESIS-Oral Presentations 18 S02-HT PROCESSES AND ADVANCED SINTERING-Invited Lectures 135 S02-HT PROCESSES AND ADVANCED SINTERING-Oral Presentations 144 S03-MODELLING OF CERAMICS-Invited Lectures 185 S03-MODELLING OF CERAMICS-Oral Presentations 195 S04-ADVANCED STRUCTURAL CERAMICS, COMPOSITES AND REFRACTORIES Invited Lectures 225 S04-ADVANCED STRUCTURAL CERAMICS, COMPOSITES AND REFRACTORIES Oral Presentations 241 S05-CERAMICS AND GLASSES FOR HEALTHCARE-Invited Lectures 340 S05-CERAMICS AND GLASSES FOR HEALTHCARE-Oral Presentations 352 S06-CERAMICS FOR ENERGY CONVERSION AND STORAGE-Invited Lectures 395 S06-CERAMICS FOR ENERGY CONVERSION AND STORAGE-Oral Presentations 405 S07-FUNCTIONAL CERAMICS-Invited Lectures 467 S07-FUNCTIONAL CERAMICS-Oral Presentations 476 S08-SILICATE CERAMICS-Invited Lectures 544
Uploads
Papers by Rosarosa Manca
Il sito si trova nell’estremità Est della pianura costiera di Portoferraio, ai piedi del promontorio su cui sorge la villa romana delle Grotte, fondata nella seconda metà del I sec. a.C. e abbandonata nella seconda metà del I sec. d.C., della quale rimangono i cospicui resti relativi alla parte residenziale che si affaccia sul mare.
times for the storage and fermentation of wine. They were
produced in specialized pottery workshops (figlinae) and were
typically marked with specific epigraphical stamps, which
represent a major tool to unravel their provenance and trade.
In this work we present the preliminary results of a study of
two dolia defossa, recently found at San Giovanni
(Portoferraio, island of Elba, Italy) during 2012–2014 archaeological
excavations in a Roman farm (late 2nd cent. BC-1st
cent. AD), devoted to wine production and probably constituting
the antecedent archaeological phase of the adjacent
BVilla delle Grotte^. Based on archaeological (epigraphic) evidence,
five different production areas have been hypothesized:
1) Elba island, where the dolia have been found; 2)
the municipal figlinae in the Pisa territory; 3) the middle catchment
of the Tiber river (central Latium) where Burban^
figlinae occurred; 4) the figlinae of Minturno (southern
Latium), a locality known both for wine production and exportation
and for the presence of ancient figlinae; 5) the
municipal figlinae in the Volterra territory. Archaeometric
analysis of tempering agents intentionally added to the clay
for the manufacturing of the dolia, particularly magmatic lithic
fragments and clinopyroxene crystals, allowed us to suggest
that the watershed of the central Tiber Valley - including different
volcanic centres belonging to both Tuscany Magmatic
Province (Monti Cimini) and Roman Magmatic Province
(Monti Vulsini and Vico volcano) - could have been the most
likely sites of production of the dolia found at San Giovanni.
Alternatively, the site of Minturno (southern Latium) could be
proposed.
Il sito si trova nell’estremità Est della pianura costiera di Portoferraio, ai piedi del promontorio su cui sorge la villa romana delle Grotte, fondata nella seconda metà del I sec. a.C. e abbandonata nella seconda metà del I sec. d.C., della quale rimangono i cospicui resti relativi alla parte residenziale che si affaccia sul mare.
times for the storage and fermentation of wine. They were
produced in specialized pottery workshops (figlinae) and were
typically marked with specific epigraphical stamps, which
represent a major tool to unravel their provenance and trade.
In this work we present the preliminary results of a study of
two dolia defossa, recently found at San Giovanni
(Portoferraio, island of Elba, Italy) during 2012–2014 archaeological
excavations in a Roman farm (late 2nd cent. BC-1st
cent. AD), devoted to wine production and probably constituting
the antecedent archaeological phase of the adjacent
BVilla delle Grotte^. Based on archaeological (epigraphic) evidence,
five different production areas have been hypothesized:
1) Elba island, where the dolia have been found; 2)
the municipal figlinae in the Pisa territory; 3) the middle catchment
of the Tiber river (central Latium) where Burban^
figlinae occurred; 4) the figlinae of Minturno (southern
Latium), a locality known both for wine production and exportation
and for the presence of ancient figlinae; 5) the
municipal figlinae in the Volterra territory. Archaeometric
analysis of tempering agents intentionally added to the clay
for the manufacturing of the dolia, particularly magmatic lithic
fragments and clinopyroxene crystals, allowed us to suggest
that the watershed of the central Tiber Valley - including different
volcanic centres belonging to both Tuscany Magmatic
Province (Monti Cimini) and Roman Magmatic Province
(Monti Vulsini and Vico volcano) - could have been the most
likely sites of production of the dolia found at San Giovanni.
Alternatively, the site of Minturno (southern Latium) could be
proposed.
Specifically, this research is focussed on: the jewels, today at the Museo Nazionale Etrusco di Villa Giulia in Rome, made by the Castellani, a famous Roman family of goldsmiths, collectors and antiques dealers; and artistic maiolica, part of the collection of the Victoria and Albert Museum (V&A) in London, made in Neo-Renaissance style by the Ginori and the Cantagalli manufactories, the main promoters of the revival of Italian maiolica, and the ceramist Torquato Castellani, member of the above-mentioned family of goldsmiths. In order to investigate intact objects in museum collections, non-invasive, in-situ analyses were performed: XRF spectroscopy with different set-ups was used to analyse the gold alloys and joining areas of Castellani jewels and the glazes of historicist Italian maiolica.
The analysis of gold jewellery was carried out with the portable micro-XRF spectrometer built in house at the Centro Nacional de Aceleradores of Seville: polycapillary lenses focus the spot of analysis to 30 μm and allowed the separate characterization of the gold foils, wires, granules and soldering areas of the 43 jewels analysed (made between the 1840s-1890s). The analysis showed that high-carat gold, with silver as the main alloying metal, was used by the Castellani and that the different elements of a jewel, including granules, were soldered with brazing alloys rich in silver. According to the Castellani this type of alloy was used by the Ancients. A zinc filter was added in front to the X-ray detector of the spectrometer: this technical modification allowed to determine that cadmium, an element added to brazing alloys from the second half of the 19th century, is not present in Castellani solders. Moreover, XRF analysis, and specifically the study of the relative intensities of the X-ray lines of gold, allowed to acquire information on the presence of superficial treatments on Castellani jewels.
A commercial XRF spectrometer available at the V&A was used for the analysis of maiolica (tin-glazed earthenware). The elemental composition of the white ground glazes, the coloured glazes and the lustre decorations of 21 Neo-Renaissance wares made between 1855 and 1900 was characterized. The compositions of the wares by Ginori, Castellani and Cantagalli are overall similar, being characterised by the presence of lead oxide and alkali as fluxes, lime as stabilizer,
5
tin oxide as opacifier and traditional colourants and pigments. Zinc was also detected in most of the 19th-century wares analysed, and was particularly abundant in the later wares made around 1900. Zinc oxide improves the properties of tin glazes and was sporadically used also in pre-industrial times, but it became commonly available only in the 19th century. The broad presence of zinc is the main feature that differentiates the 19th-century glazes analysed from Renaissance maiolica glazes, which otherwise have a remarkably similar composition. The comparison with Renaissance maiolica was based both on the data available in the literature and on the XRF analysis of three V&A wares: two original pieces which inspired a Cantagalli and a Castellani copy, respectively, and a 16th-century plate with 19th-century replacements. Beside zinc, only a few modern elements, available thanks to the recently-established chemical industry, were identified: chromium-containing colourants were occasionally detected in Castellani and Cantagalli creations; lustre decorations containing gold, bismuth and uranium, instead of the traditional metallic copper and silver, were identified in a dish by Castellani. The results obtained showed that traditional glaze formulations were still used in the production of maiolica in the 19th century, but that newly developed materials were being introduced as well.
The most extensive set of compositional data on both 19th-century gold jewels and maiolica was acquired in this study and provided precious information on the production practices of some of the most popular and influential goldsmiths and ceramists of 19th-century Europe.