A Technical and Analytical Study of Two Silver Plates in the Collection of the J.Paul Getty Museum

1990 ◽  
Vol 185 ◽  
Author(s):  
David Scott
Keyword(s):  
Inductively Coupled Plasma ◽  
Analytical Study ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
X Ray ◽  
Inductively Coupled ◽  
Close Relationship ◽  
Plasma Mass Spectrometry ◽  
Non Destructive

AbstractTwo silver plates in the collection of the J. Paul Getty Museum were studied by non-destructive x-ray fluorescence spectroscopy, inductively-coupled plasma-mass spectrometry, xradiography, optical metallography, electron microprobe analysis and lead isotopic composition. One plate depicts a scene of philosophical discourse (the ‘Philosopher plate’) and the other an aged fisherman with his catch (the ‘Fisherman plate’). Both plates have designs on the fronts made not by repousse but by a combination of working and annealing followed by carving to shape. Technical and analytical results are described which support the attribution of a date in the early centuries AD. There are several differences between the two plates, such as the way in which the footring has been made and attached. Both, however, have thick corrosion crusts and have suffered intergranular corrosion. Determination of trace elements, such as zinc and gold, together with the method of manufacture suggests that both plates are ancient. Lead isotopic data for the two plates is different, with the Philosopher plate showing a close relationship to other Byzantine objects, even though a Renaissance date had been suggested.

scholarly journals Efflorescent Sulfate Crystallization on Fractured and Polished Colloform Pyrite Surfaces: A Migration Pathway of Trace Elements

Minerals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 12
Author(s):  
Dimitrina Dimitrova ◽  
Vassilka Mladenova ◽  
Lutz Hecht
Keyword(s):  
Electron Microscopy ◽  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
X Ray ◽  
Inductively Coupled ◽  
Migration Pathway ◽  
Plasma Mass Spectrometry ◽  
Scanning Electron

The colloform pyrite variety incorporates many trace elements that are released in the environment during rapid oxidation. Colloform pyrite from the Chiprovtsi silver–lead deposit in Bulgaria and its oxidation efflorescent products were studied using X-ray diffractometry, scanning electron microscopy, electron microprobe analysis, and laser ablation inductively coupled plasma mass spectrometry. Pyrite is enriched with (in ppm): Co (0.1–964), Ni (1.8–3858), Cu (2.9–3188), Zn (3.1–77), Ag (1.2–1771), As (8179–52,787), Se (2.7–21.7), Sb (48–17792), Hg (4–2854), Tl (1.7–2336), Pb (13–7072), and Au (0.07–2.77). Gypsum, anhydrite, szomolnokite, halotrichite, römerite, copiapite, aluminocopiapite, magnesiocopiapite, coquimbite, aluminocoquimbite, voltaite, and ammoniomagnesiovoltaite were identified in the efflorescent sulfate assemblage. Sulfate minerals contain not only inherited elements from pyrite (Cr, Fe, Co, Ni, Cu, Zn, Ag, In, As, Sb, Hg, Tl, and Pb), but also newly introduced elements (Na, Mg, Al, Si, P, K, Ca, Sc, Ti, V, Mn, Ga, Rb, Sr, Y, Zr, Sn, Cs, Ba, REE, U, and Th). Voltaite group minerals, copiapite, magnesiocopiapite, and römerite incorporate most of the trace elements, especially the most hazardous As, Sb, Hg, and Tl. Colloform pyrite occurrence in the Chiprovtsi deposit is limited. Its association with marbles would further restrict the oxidation and release of hazardous elements into the environment.

Applications of earth science techniques to archaeological problems — Introduction

2004 ◽  
Vol 41 (6) ◽  
pp. 655-657 ◽  
Author(s):  
Leanne M Mallory-Greenough ◽  
John D Greenough
Keyword(s):  
Inductively Coupled Plasma ◽  
Microprobe Analysis ◽  
Earth Science ◽  
Glass Ceramics ◽  
Optically Stimulated Luminescence ◽  
X Ray ◽  
Inductively Coupled ◽  
Stratigraphic Analysis ◽  
Plasma Mass Spectrometry ◽  
The Many

The thematic set provides examples of the many techniques that earth scientists can offer for use in archaeology. These studies use methods such as electron microprobe analysis, inductively coupled plasma – mass spectrometry, X-ray fluorescence, optically stimulated luminescence, and soil and sediment stratigraphic analysis. Materials examined range from soils to basalt and dacite artifacts, glass, ceramics, phytoliths, and even ore assay beads. They cover 8000 years of time and are derived from three continents. The diversity of materials and techniques underscores the potential for collaboration as we open new doors into our collective past.

Topaz as an important host for Ge in granites and greisens

2013 ◽  
Vol 77 (4) ◽  
pp. 403-417 ◽  
Author(s):  
K. Breiter ◽  
N. Gardenová ◽  
T. Vaculovič ◽  
V. Kanický
Keyword(s):  
Mass Spectrometry ◽  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Important Host ◽  
Ga Content

AbstractThe composition of topaz from different granites and greisen in the Krušné Hory/Erzgebirge area was investigated using electron microprobe analysis (EMPA) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). All topaz grains are rich in F (17.9 19.8 wt.%, 1.73 1.90 a.p.f.u.) and the most important minor/trace elements are P, Ge and Ga. Contents of P up to 1 wt.% P2O5 (0.025 a.p.f.u.) were found in topaz from the strongly peraluminous P-rich magmatic systems at Podlesí. Regardless of genetic type, topaz from granites typically contains 50 100 ppm Ge. The greatest amounts (up to 204 ppm Ge) were found in topaz from quartz-topaz-apatite greisen in Krásno. In fractionated granites and greisens, topaz is calculated to contain 23 87% of the bulk Ge content in the rock. In contrast, topaz does not concentrate Ga. The Ga content of topaz (typically 5 35 ppm in S-type granites, <10 ppm Ga in A-type granites) is usually smaller than the bulk Ga content of the rock. In addition, up to 16 ppm Sc, 23 ppm Sn and >400 ppm Fe may be present.

Structural characterization and chemical composition of aragonite and vaterite in freshwater cultured pearls

2008 ◽  
Vol 72 (2) ◽  
pp. 579-592 ◽  
Author(s):  
A. L. Soldati ◽  
D. E. Jacob ◽  
U. Wehrmeister ◽  
W. Hofmeister
Keyword(s):  
Inductively Coupled Plasma ◽  
Organic Molecules ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Distribution Coefficients ◽  
Crystal Habit ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Cultured Pearls

AbstractVaterite and aragonite polymorphs in freshwater cultured pearls from mussels of the genus Hyriopsis (Unionidae) were structurally and compositionally characterized by Raman spectroscopy, Micro computer tomography, high resolution field emission scanning electron microscopy, electron microprobe analysis and laser ablation inductively coupled plasma mass spectrometry. The appearance of vaterite in pearls is related to the initial stages of biomineralization, although we demonstrate that vaterite can not be a precursor to aragonite. It is not related to a particular crystal habit and therefore does not have a structural functionality in the pearls. Larger contents of elements typically bound to organic molecules, such as P and S in vaterite, as well as larger total organic contents in vaterite as opposed to aragonite in conjunction with larger concentrations of Mn2+ and Mg2+, imply a stabilizing role of organic macromolecules and X2+ ions for biological vaterite. Distribution coefficients between aragonite and vaterite for provenance-independent elements, such as Mn and Mg (0.27 and 0.04, respectively) agree very well with those observed in fish otoliths.

Synthesis of ZnO Thin Films Doped with Ga and In: Determination of Their Composition through X-Ray Spectroscopy and Inductively Coupled Plasma Mass Spectrometry

2017 ◽  
Vol 53 (14) ◽  
pp. 1458-1462
Author(s):  
D. G. Filatova ◽  
N. A. Vorobyeva ◽  
M. N. Rumyantseva ◽  
V. B. Baranovskaya ◽  
A. E. Baranchikov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Thin Films ◽  
Inductively Coupled Plasma ◽  
Zno Thin Films ◽  
X Ray ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry
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