Raman spectroscopy of the basic copper chloride minerals atacamite and paratacamite : implications for the study of copper, brass and bronze objects of archaeological significance

Ray L. Frost, Wayde Neil Martens, J. T. Kloprogge, Peter A. Williams

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    185 Citations (Scopus)

    Abstract

    Raman spectra of the basic copper chloride minerals atacamite and paratacamite were obtained at 298 and 77 K using a Raman microprobe in combination with a thermal stage. Four distinct regions involved with hydroxyl stretching, hydroxyl deformation, CuO stretching and CuCl stretching and bending were identified. The implication from the study is that Raman spectroscopy can be a useful tool for identifying corrosion products of copper, brass and bronze objects of archaeological or antiquarian significance. In addition, the technique may be a useful aid in the restoration degraded pigment products from old paintings.
    Original languageEnglish
    Number of pages6
    JournalJournal of Raman Spectroscopy
    Publication statusPublished - 2002

    Keywords

    • Raman spectroscopy
    • archaeological chemistry
    • copper
    • corrosion
    • cuprous oxide

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