... spectra, which are differentiated by the presence of bands in the range 80 0 to 700 cm–1, similar to those of the ion Cr2O72– (Fe-, Ni-, Zn-, Cu-, Co-, Al-,and Cd-Cro4)Raman results of standard ... (cm–1)PbCrO4 83 9 (M)3 78 (vW)Na2CrO4, xH2O 3340, 3250 (vH2O)9 38 (M), 923 (M), 89 1 (H), 85 3 (vH), 81 0 (M)4 38 (W), 350 (W)K2CrO4906 (M), 87 7 (M), 86 9 (H), 85 3 (H)394 (vW), 389 (W), 3 48 (M)CaCrO4905 ... V.C., The Infrared Spectra of Minerals, Mineralogical Society, London, 1974, 539. 28. Griffith, W.P., Advances in the Raman and infrared spectroscopy of minerals, Spectroscopy of Inor-ganic-based...