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- W4294136865 abstract "About two hundred coloured glass beads (red, yellow, green, blue, white, black, pink, plum) were selected among the thousands of beads excavated on Mapungubwe hill and at K2, archaeological sites in the Limpopo valley South Africa, and have been studied with Raman scattering. The glass matrix of the beads was classified according to its Raman signature into 3 main sub-groups and corroded glass could also be identified. At least seven different chromophores or pigments (lazurite, lead tin yellow type II, Ca/Pb arsenate, chromate, calcium antimonate, Fe-S amber and a spinel) have been identified. Many of the pigments were only manufactured after the 13th century that confirms the presence of modern beads in the archaeological record. This calls for further research to find a way to reconcile the carbon dating of the hill, which currently gives the last occupation date on the hill as 1280 AD with the physical evidence of the modern beads excavated on the hill." @default.
- W4294136865 created "2022-09-02" @default.
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- W4294136865 date "2010-12-07" @default.
- W4294136865 modified "2023-10-15" @default.
- W4294136865 title "Raman spectra database of the glass beads excavated on mapungubwe hill and k2, two archaeological sites in South Africa" @default.
- W4294136865 doi "https://doi.org/10.48550/arxiv.1012.1465" @default.
- W4294136865 hasPublicationYear "2010" @default.
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