In this paper, the solid-solution series of the jarosite group AFe3(SO4)2(OH)6 have been synthesized, where the site of A can be occupied by K+, Na+ and H3O+. In addition, nearly fully occupied potassium jarosite is prepared for comparison. Raman spectra of the jarosite group are measured and analysized. The jarosite group minerals can be characterized by Raman spectra and the bonds can be due to the hydroxyl groups, internal modes of sulfate and lattice modes. Some bonds assignment which are open to question are analysized. According to the number of the scattered peaks and frequencies, the size of the ionic radius, bonds length and bonds angle, the effect of the substitutions of ions in A-site of jarosite solid solution series is analysized by hooke's law. The substitution effect of A position ion mainly affect the OH in the jarosite and the hydroxyl vibration mode.
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Synthesis and Raman Spectral Analysis of Solid-Solution Series of Jarosite Group. Chinese Journal of Light Scattering. 2016, 28(4): 317-323 https://doi.org/10.13883/j.issn1004-5929.201604008