Micro Raman spectroscopy and X-ray diffraction were performed for single crystals of natural blue... more Micro Raman spectroscopy and X-ray diffraction were performed for single crystals of natural blue halite from Kłodawa Salt Mine (Zechstein salt deposit). The samples represented navy blue, blue, purple and colourless NaCl. Unusual concentrations of colour centre aggregates in blue samples were found. F-,R1-(F3), R2-(F3) bands together with plasmon band and M-band were identified and their populations were estimated. Very
Micro Raman spectroscopy and X-ray diffraction were performed for single crystals of natural blue... more Micro Raman spectroscopy and X-ray diffraction were performed for single crystals of natural blue halite from Kłodawa Salt Mine (Zechstein salt deposit). The samples represented navy blue, blue, purple and colourless NaCl. Unusual concentrations of colour centre aggregates in blue samples were found. F-,R1-(F3), R2-(F3) bands together with plasmon band and M-band were identified and their populations were estimated. Very
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