Journal
APPLIED SPECTROSCOPY
Volume 70, Issue 1, Pages 76-93Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0003702815616595
Keywords
Micro-Raman spectroscopy; Handheld X-ray fluorescence; Chemometrics; Western Central-African beads; Colored glass; Archaeometry
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Funding
- Concerted Research Action Archaeometrical Study of the Ghent Altarpiece (GOA)
- European Research Council [284126]
- Ghent University
- European Research Council (ERC) [284126] Funding Source: European Research Council (ERC)
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Raman spectroscopy and X-ray fluorescence (XRF) analysis are commonly applied to archaeological objects as a fast and nondestructive way to characterize the materials. Here, micro-Raman spectroscopy and chemometrics on handheld XRF results were used to completely characterize beads found during archaeological excavations in the Congo. Metallic objects, organogenic materials, and glass beads were studied. Special attention was paid to the glassy materials, as they seem to be of European production. The matrix family and crystalline phases assemblage, as well as the results from principal components analysis on the elemental data, were used to define groups of beads of similar composition, and therefore probably of similar origin. This research project establishes the feasibility of this approach to archaeological glasses, and can be used to confirm and support the bead typologies used by archaeologists.
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