Evaluation of segregation in Roman sestertius coins

Herringer, Susan N.; Ryzewski, Krysta; Bilheux, Hassina Z.; Bilheux, Jean-Christophe; Sheldon, Brian W.

doi:10.1007/s10853-017-1629-x

Cited by 11 publications

(5 citation statements)

References 16 publications

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“…We also find the enhanced levels of surficial Pb compared to the bulk composition, the segregation of Pb, and Pb's impact on the texture analyses and phase widths is consistent with other researchers' findings based on XRD, SEM, metallography [ 16 , 68 ], and neutron imaging techniques [ 69 ].…”

Section: Resultssupporting

confidence: 91%

Time-of-Flight Neutron Diffraction (TOF-ND) Analyses of the Composition and Minting of Ancient Judaean “Biblical” Coins

Nagler

Stoica

et al. 2019

Journal of Analytical Methods in Chemistry

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TOF-ND elastic scattering of thermal neutrons offers some important advantages over X-ray diffraction (XRD), X-ray fluorescence (XRF), and metallography for the study of archaeological and numismatic problems. Traditional analytical methods are usually destructive and often probe only the surface. Neutrons deeply penetrate samples, simultaneously giving nondestructive bulk information about the crystal structure, composition, and texture (alignment of crystallites) from which thermomechanical manufacturing processes (e.g., cast, struck, or rolled) may be inferred. An analysis of the metal composition and minting processes used for making ancient Judaean bronze and leaded bronze coins from first century BCE and CE is used as a case study. One of the first ND analyses of the temperature used for striking bronze coins is also presented.

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Section: Resultssupporting

confidence: 91%

Time-of-Flight Neutron Diffraction (TOF-ND) Analyses of the Composition and Minting of Ancient Judaean “Biblical” Coins

Nagler

Stoica

et al. 2019

Journal of Analytical Methods in Chemistry

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“…XRF and EDX, although XRF more so, are commonly used techniques within the field of cultural heritage and have been utilised in many applications, dominantly in assessing the condition of paintings and the materials they are made from [73, 74]. XRF has also been used in many other contexts as well however, including as stone archaeological objects [75], weaponry [76], tracing provenance of archaeological materials [77, 78], evaluating the composition of writing materials [79, 80], metallic artefacts and coins [81, 82] among a myriad of other disparate applications.…”

Section: Discussionmentioning

confidence: 99%

X-ray computed tomography (XCT) and chemical analysis (EDX and XRF) used in conjunction for cultural conservation: the case of the earliest scientifically described dinosaur Megalosaurus bucklandii

et al. 2018

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This paper demonstrates the combined use of X-ray computed tomography (XCT), energy dispersive X-ray spectroscopy (EDX) and X-ray fluorescence (XRF) to evaluate the conservational history of the dentary (lower jaw) of Megalosaurus bucklandii Mantell, 1827, the first scientifically described dinosaur. Previous analysis using XCT revealed that the specimen had undergone at least two phases of repair using two different kinds of plaster, although their composition remained undetermined. Additional chemical analysis using EDX and XRF has allowed the determination of the composition of these unidentified plasters, revealing that they are of similar composition, composed dominantly of ‘plaster of Paris’ mixed with quartz sand and calcite, potentially from the matrix material of the Stonesfield Slate, with the trace presence of chlorine. One of the plasters unusually contains the pigment minium (naturally occurring lead tetroxide; Pb 2 2+ Pb 4+ O 4 ) whilst the other seems to have an additional coating of barium hydroxide (Ba(OH) 2 ), indicating that these likely represent two separate stages of repair. The potential of this combined approach for evaluating problematic museum objects for conservation is further discussed as is its usage in cultural heritage today.

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“…Scans have also been used to investigate the spatial distribution of remaining alloy and corrosion products (Bozzini et al 2014, Kichanov et al 2017, Abdurakhimov et al 2021) and optimize physical restoration (Bozzini et al 2014) or reveal the manufacture of coins (e.g. Abramson et al 2018;Herringer et al 2018;Salvemini et al 2018).…”

Section: Approachmentioning

confidence: 99%

Change lost: Corrosion of Roman copper alloy coins in changing and variable burial environments

Huisman

Ackermann

Claes

et al. 2023

Journal of Archaeological Science: Reports

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Evaluation of segregation in Roman sestertius coins

Cited by 11 publications

References 16 publications

Time-of-Flight Neutron Diffraction (TOF-ND) Analyses of the Composition and Minting of Ancient Judaean “Biblical” Coins

Time-of-Flight Neutron Diffraction (TOF-ND) Analyses of the Composition and Minting of Ancient Judaean “Biblical” Coins

X-ray computed tomography (XCT) and chemical analysis (EDX and XRF) used in conjunction for cultural conservation: the case of the earliest scientifically described dinosaur Megalosaurus bucklandii

Change lost: Corrosion of Roman copper alloy coins in changing and variable burial environments

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