Abstract
The application of Raman spectroscopy to the study of the copper chloride minerals nantokite, eriochalcite and claringbullite has enabled the vibrational modes for the CuCl, CuOH and CuOHâ‚‚ to be determined. Nantokite is characterised by bands at 205 and 155 cmâ»Â¹ attributed to the transverse and longitudinal optic vibrations. Nantokite also has an intense band at 463 cmâ»Â¹, eriochalcite at 405 and 390 cmâ»Â¹ and claringbullite at 511 cmâ»Â¹. These bands are attributed to CuO stretching modes. Water librational bands at around 672 cmâ»Â¹ for eriochalcite have been identified and hydroxyl deformation modes of claringbullite at 970, 906 and 815 cmâ»Â¹ are observed. Spectra of the three minerals are so characteristically different that the minerals are readily identified by Raman spectroscopy. The minerals are often determined in copper corrosion products by X-ray diffraction. Raman spectroscopy offers a rapid, in-situ technique for the identification of these corrosion products.
Original language | English |
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Number of pages | 13 |
Journal | Neues jahrbuch für mineralogie. Monatshefte |
Publication status | Published - 2003 |
Keywords
- copper
- corrosion
- cuprous chloride
- eriochalcite
- nantokite
- raman spectroscopy