Vibrational spectroscopy applied to the study of archeological ceramic artifacts from Guarani culture in Brazil

Cavalheri, Adriana S.; Balan, Ana Maria Osório Araya; Künzli, Ruth; Constantino, Carlos J. L.

doi:10.1016/j.vibspec.2010.09.004

Cited by 13 publications

(10 citation statements)

References 26 publications

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“…It has been clearly demonstrated that several valuable conclusions can be extracted especially with regards to raw materials provenance and technology [4,5], through the identification of the mineralogical phases in ancient ceramics. Micro-Raman spectroscopy has been applied for mineral identification both in ceramic mass/clay as well as in the pigments used for decoration [6][7][8][9][10][11]. In this framework, indicative information about the firing conditions (e.g., atmosphere and temperature) can be acquired through the identification of raw material composition, but most importantly, through the chemical transformations that the constituent minerals undergo during the firing process.…”

Section: Introductionmentioning

confidence: 99%

Mineralogical Characterization and Firing Temperature Delineation on Minoan Pottery, Focusing on the Application of Micro-Raman Spectroscopy

et al. 2019

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Ceramic objects in whole or in fragments usually account for the majority of findings in an archaeological excavation. Thus, through examination of the values these items bear, it is possible to extract important information regarding raw materials provenance and ceramic technology. For this purpose, either traditional examination protocols could be followed, focusing on the macroscopic/morphological characteristics of the ancient object, or more sophisticated physicochemical techniques are employed. Nevertheless, there are cases where, due to the uniqueness and the significance of an object of archaeological value, sampling is impossible. Then, the available analytical tools are extremely limited, especially when molecular information and mineral phase identification is required. In this context, the results acquired from a multiphase clay ceramic dated on Early Neopalatioal period ΜΜΙΙΙΑLMIA (1750 B.C.E.–1490 B.C.E.), from the Minoan Bronze Age site at Philioremos (Crete, Greece) through the application of Raman confocal spectroscopy, a nondestructive/ noninvasive method are reported. The spectroscopic results are confirmed through the application of Xray microdiffraction and scanning electron microscopy coupled with energy dispersive Xray spectrometry. Moreover, it is demonstrated how it is made possible through the application of microRaman (μRaman) spectroscopy to examine and collect crucial information from very small inclusions in the ceramic fabric. The aim of this approach is to develop an analytical protocol based on μRaman spectroscopy, for extracting firing temperature information from other ceramic finds (figurines) where due to their uniqueness sampling and analyses through other techniques is not possible. This information can lead to dating but also to firing kiln technology extrapolations that are very significant in archaeology.

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Section: Introductionmentioning

confidence: 99%

Mineralogical Characterization and Firing Temperature Delineation on Minoan Pottery, Focusing on the Application of Micro-Raman Spectroscopy

et al. 2019

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“…For that reason, the coupling of Raman spectroscopy with optical or electron microscopy and a diffraction technique is the most typical combination in publications involving Raman study of ceramics. Very often, Fourier‐transform infrared absorption (FTIR) and elemental techniques such as scanning electron microscope, coupled with energy dispersive X spectroscopy (SEM‐EDS) or X‐ray fluorescence (XRF), are also present. Sometimes other techniques are present, as LIBS, proton‐induced X‐ray emission spectroscopy, XAS, AAS and ICP‐OES.…”

Section: Introductionmentioning

confidence: 99%

“…Amongst the white pigments used in ceramics, alumina Al 2 O 3 was one of the most common. In addition to the weak Raman bands of corundum, located at 379, 417, 644 and 750 cm −1 , alumina is often identified, when using the 632.8 nm excitation, by the strong doublet appearing at 1367 and 1397 cm −1 . It is important to note that this is not a real ‘Raman identification’ because these are very strong photoluminescence bands of Cr 3+ ions, always present in the alumina crystals.…”

Section: Introductionmentioning

confidence: 99%

“…It is important to note that this is not a real ‘Raman identification’ because these are very strong photoluminescence bands of Cr 3+ ions, always present in the alumina crystals. Another very common pigment, especially in nonglazed pottery, is carbon black; apart from the many attempts to differentiate the origin of carbon by the D and G carbon bands in the Raman spectra, the presence of the phosphate Raman band (around 960 cm −1 ) typical of apatite helps to distinguish between ‘bone black’ and other kind of carbonaceous materials . However, this method should be applied very carefully, because the strong and broad carbon bands could hide the peak of a minor phosphate phase.…”

Section: Introductionmentioning

confidence: 99%

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Raman spectroscopy of minerals and mineral pigments in archaeometry

Bersani

Lottici

2016

J Raman Spectroscopy

145

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Minerals, as raw structural materials or pigments, play a fundamental role in archaeometry, for the understanding of nature, structure and status of an artefact or object of interest for cultural heritage. A detailed knowledge of the mineral phases is crucial to solve archaeological problems: Raman spectroscopy is a powerful investigation technique and has been applied extensively in the last 30 years on mineral identification and on pigment degradation. Here we report an updated review, covering the last decade, of the applications of Raman techniques to issues in which raw minerals, including mineral pigments, are involved. Particular attention is devoted to cases where the Raman analysis of minerals is deeper than a simple identification of the phases present in an archaeological or artistic object. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Carbon-based pigments have been identified in archaeological artifacts [5], rock art [6], and in easel and wall paintings [1,3,4,7]. In most cases, the pigment was assumed to be charcoal or simply "carbon black", a term generally used to mean any pigment based on carbon [8].…”

Section: Introductionmentioning

confidence: 99%

Identification of carbon-based black pigments in four South American polychrome wooden sculptures by Raman microscopy

et al. 2015

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Introduction: Carbon-based pigments are a group of dark-colored materials, which are classified according to the starting material used and their manufacturing process. Raman spectroscopy is an ideal technique for the identification of carbonaceous matter. Carbon-based pigments show broad bands between 1,300 and 1,600 cm −1 but they differ in position, width and relative intensity, allowing discrimination between them. The aim of the present study was the identification of carbon-based pigments in four polychrome wooden sculptures from the Jesuit Mission La Trinidad in Paraguay.Results: Analysis of the Raman spectral parameters of the polychrome samples and comparison with those of carbon-based pigment references allowed the identification of wood charcoal, lampblack, bistre and a black earth pigment. Complementary analysis by infrared spectroscopy and elemental analysis supported the assignments. Conclusions:In this study we have provided new evidence that Raman microscopy is a powerful technique for the discrimination of carbon-based pigments in works of art. This is the first time that bistre, lampblack and a black earth pigment are identified in colonial art. The chemical information obtained on the black pigments contributed to increase our knowledge on available resources and technology used in the manufacture of the polychrome sculptures at the Jesuit Mission. This information is relevant for our studies on Colonial art.

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Vibrational spectroscopy applied to the study of archeological ceramic artifacts from Guarani culture in Brazil

Cited by 13 publications

References 26 publications

Mineralogical Characterization and Firing Temperature Delineation on Minoan Pottery, Focusing on the Application of Micro-Raman Spectroscopy

Mineralogical Characterization and Firing Temperature Delineation on Minoan Pottery, Focusing on the Application of Micro-Raman Spectroscopy

Raman spectroscopy of minerals and mineral pigments in archaeometry

Identification of carbon-based black pigments in four South American polychrome wooden sculptures by Raman microscopy

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