In: Archaeometry, 2014, vol. 56, no. 4, p. 665–680
Lead isotopes combined with trace element data represent a powerful tool for non-ferrous metal provenance studies. Nevertheless, unconsidered geological factors and archaeological data, as well as ignored analytical procedures, may substantially modify the interpretation of the isotopic and trace element signature obtained as a potential ore candidate. Three archaeological examples, accompanied...
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In: Scientific Reports, 2020, vol. 10, no. 1, p. 9582
The absolute dating of paintings is crucial for tackling the problem of fake art. Investigations to authenticate paintings rely on an advanced knowledge of art history and a collection of scientific techniques. Radiocarbon dating is the only technique that gives access to an absolute time scale, but its application is limited to organic materials such as wood, canvas or natural binder....
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In: Journal of the European Ceramic Society, 2018, vol. 38, no. 15, p. 5228–5233
A Raman study of a Sèvres soft paste (frit) porcelain plate allowed the identification of both the crystalline and amorphous phases. Cristobalite and pseudowollastonite gave main Raman signatures in the body where also tridymite, amorphous alkali silicate glass and lead arsenate apatite were detected. Na0.4K0.1Ca0.5Pb4(AsO4)3 lacunar apatite is identified as opacifier in blue and green...
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Thèse de doctorat : Université de Fribourg, 2002 ; no 1391.
La presente ricerca concerne lo studio dei prodotti ceramici provenienti dai due siti lacustri, del Neolitico finale, di Portalban e St. Blaise, in Svizzera occidentale, relativamente al gruppo culturale "Auvernier-cordé" (2700–2400 a.C.). Questi due importanti siti fanno parte della sequenza della Regione dei Tre Laghi (Neuchâtel, Bienne e Morat), la quale include la completa stratigrafia...
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In: Contributions to Mineralogy and Petrology, 2017, vol. 172, no. 6, p. 41
Characterisation of mass transfer during subduction is fundamental to understand the origin of compositional heterogeneities in the upper mantle. Fe isotopes were measured in high-pressure/low-temperature metabasites (blueschists, eclogites and retrograde greenschists) from the Ile de Groix (France), a Variscan high-pressure terrane, to determine if the subducted oceanic crust contributes to...
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In: Clays and Clay Minerals, 2009, vol. 57, no. 2, p. 139-149
The influence of Cu(II) on the hydrothermal and thermal transformations of a synthetic hectorite was investigated by a combined approach using mainly X-ray diffraction, thermal analyses, and electron paramagnetic resonance spectroscopy. The presence of Cu(II) during hydrothermal treatment increased the crystallite size. Copper (II) was both structure-bound and associated with the inner surfaces...
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In: Archaeometry, 2015, vol. 57, no. 3, p. 426–452
Forty-eight tin-glazed ceramic fragments (faiences) from Lorraine, found in excavations or pertaining to objects in collections, were subjected to X-ray fluorescence analysis to determine the bulk, major, minor and trace element compositions. Sixteen superficially clay layers from the surroundings of Lunéville and Saint-Clément were also analysed. The faiences are, with four exceptions, MgO...
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In: European Journal of Mineralogy, 2017, p. -
Optical microscopy, X-ray diffraction, X-ray fluorescence and scanning electron microscopy analyses were carried out on a typical Sèvres soft (frit) porcelain plate from 1781 in order to determine the chemical and mineralogical composition as well as the microstructure of its ceramic body, glaze, overglaze decoration and gilding. The body is rich in SiO₂ (73 mass%), CaO (16) and alkali...
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In: Archaeometry, 2011, vol. 53, no. 4, p. 765–790
Fragments of 25 examples of ‘white earthenware’ from Lorraine were subjected to porosity analysis, X-ray fluorescence analysis, X-ray diffraction analysis and backscattered-electron image analysis—coupled with energy-dispersive spectrometry to determine the porosity, bulk, major, minor and trace element compositions, and the composition and the proportion of their constituent...
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In: European Journal of Mineralogy, 2011, vol. 23, no. 6, p. 993-1006
Seven unglazed figurines from private collections, attributed to Cyfflé's Terre de Lorraine manufacture in Lunéville (1766-1780), were subjected to porosity and scanning electron microscopic analyses to determine bulk element compositions and the composition and nature of their constituent phases. One figurine bears the mark CYFFLÉ À. LUNÉVILLE, three the mark TERRE DE LORRAINE. The...
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