Complex archaeometallurgical investigation of silver coins from the XVI th -XVIII th century

Fierăscu, Radu Claudiu; Fierăscu, Irina; Orţan, Alina; Constantin, F.; Mirea, Dragoș Alexandru; Statescu, M.

doi:10.1016/j.nimb.2017.04.030

Cited by 15 publications

(5 citation statements)

References 28 publications

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“…The results of the XRF analysis are presented in Table 2 (examples of XRF spectra provided in Supplementary Figure S5). Given that the portable XRF instruments have a spot size smaller than 1 cm (in diameter) (Crocombe, 2018), multiple determinations are often required to provide a statistically significant determination of the samples' composition (Fierascu et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Archaeometrical Characterization of Romanian Late Bronze Age Ceramic Fragments

et al. 2021

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Knowledge of the past can provide information to protect the future and the potential of the technological development in the analytical sciences can be successfully applied for the study and conservation of cultural objects. In this context, in the present paper we propose an analytical methodology to characterize seven samples of ancient ceramic objects (dating to the Late Bronze Age). The samples were analyzed using optical microscopy, and all the samples presented a strong inhomogeneity on the surface, as suggested by the different colors of the ceramics. X-ray fluorescence (XRF) results reveal a relatively heterogenous composition of the samples, as well as strong differences between the different surfaces of each sample. By comparative analysis of the diffractograms recorded for both sides of the same samples were observed some differences, especially in terms of relative concentration of the component minerals, and, in lesser content, in terms of new phases present in the samples. Corroborated results obtained by XRF and X-ray diffraction (XRD) offered information regarding mineralogical composition of the samples: for some of them illite/muscovite and plagioclase phases are present in higher quantities or a lower quartz content. The presence of these components was confirmed by Fourier-transform infrared spectroscopy (FTIR) analysis. The thermal analysis completes the analytical investigation of the ceramic samples. The thermal behavior of the sample conducted to some explanation regarding the observed differences, due to the raw materials (that the major clay mineral in the samples is represented by illite) or to environmental factors during their burial in the soil.

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Section: Resultsmentioning

confidence: 99%

Archaeometrical Characterization of Romanian Late Bronze Age Ceramic Fragments

et al. 2021

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“…Considering the previous collaboration with the project coordinator in the field of archaeometry (Fierascu, R.C., et al 2017;Fierascu, I., et al, 2018), the demonstrative experiment (D.E.) assumed by ICECHIM focused on development and implementation of methodologies for the study of cultural heritage artifacts (focusing on metallic artifacts, historical textiles and wood artifacts).…”

Section: Demonstrative Experiments -Transdisciplinary Studies For The...mentioning

confidence: 99%

Transdisciplinary Studies for Valorisation of National Cultural Heritage Using Nuclear Techniques and Other Associated Methods

Fierăscu

Rădiţoiu

et al. 2018

DiPP

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“…Such techniques that respect these strict conditions are: energy dispersive X-ray fluorescence (ED-XRF) [1][2][3][4], scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX) [3][4][5], vibrational spectroscopy methods [5,6], optical microscopy [7], particle induced X-ray emission (PIXE) [3,4,7].…”

Section: Introductionmentioning

confidence: 99%

“…Scanning electron microscopy (SEM) with energy dispersive X-ray spectrometry (EDX), represents a technique very often chosen to analyze mainly the microstructure of artifacts, because the X-rays are not affecting their basic structure. Beside the fact that it needs no sample preparation, it can determine chemical elements (from Z=11 up to 92, heavier than Na) both qualitatively and quantitatively with a good precision and sensitivity, in a short time and with low costs [4,[7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Surface and elemental analysis of 20th century Romanian coins using SEM-EDX technique

Sion

Cantaragiu

Ene

et al. 2019

Ann_UGAL_Math_Phys_Mec

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The cooperation between scientists and numismatics is needed because there is a practical requirement to extract all the information from materials in order to accomplish a complete research. In this paper several Romanian coins from early 20 th century are analysed using scanning electron microscopy (SEM) and energy dispersive Xray spectroscopy (EDX) in order to determine the micro-chemical nature and structure in order to establish the conservation state and manufacturing method. The results indicated that the coins were authentic and for some cases mechanical evidences were presented, suggesting pre-heating before minting. Generally, the metallic samples were relatively well protect against the aggressive external factors but, due to the natural corrosion process, many corrosion products were formed on the metallic surface.

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Complex archaeometallurgical investigation of silver coins from the XVI th -XVIII th century

Cited by 15 publications

References 28 publications

Archaeometrical Characterization of Romanian Late Bronze Age Ceramic Fragments

Archaeometrical Characterization of Romanian Late Bronze Age Ceramic Fragments

Transdisciplinary Studies for Valorisation of National Cultural Heritage Using Nuclear Techniques and Other Associated Methods

Surface and elemental analysis of 20th century Romanian coins using SEM-EDX technique

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