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Information × Registration Number 0206U000832, 0103U000244 , R & D reports Title Spectroscopy of rock-forming layer silicates popup.stage_title Head Platonov A.N, Taraschan A.N., Registration Date 07-02-2006 Organization nstitute of Geochemistry, Mineralogy and Ore Formation popup.description2 The aim of the work is to investigate the nature and characteristics of spectroscopic active centers (SAC) in layer silicates, their crystal chemical and genetic self-descriptiveness. The methods of investigation are optical absorption spectroscopy, diffuse reflectance spectroscopy, photo- and X-ray-luminescence, IR-spectroscopy, wet and microprobe chemical analyses. On basis of obtained information on nature and characteristics of SAC in micas and chlorites the mechanisms of isomorphic entering of transition metal ions of the first transition series, Ti, Cr3+, Mn2+, Mn3+, Fe2+, Fe3+, Ni2+, as well as rare earth ions TR2+,3+ to various structural sites of the studied munerals are considered. Peculiarities of formation and distribution of hydrogen-oxygen groups in the crystal structures are studied. Experimental data on nature and systems of SAC in magnesium-iron bearing micas from granitoids and metamorphites of the Ukrainian shield, muscovites and lithium-bearing micas from rare earth deposits of various genetic types in layer silicates from hydrothemally changed nearly ore rocks evidence about high crystal chemical and genetic self-descriptiveness of SAC and that spectroscopic information may be used for solving a number of petrogenetic and searching tasks. On basis of the original and on analysis of literature data the most comprehensive summary on optical spectroscopic parameters of 3dN-ions in layer silicates was compiled. ROCH-FORMING LAYER SILICATES, OPTICAL ABSORPTION AND LUMINESCENCE SPECTRA, IR-SPECTRA, CRYSTAL CHEMISTRY, TYPOMORPHISM. Product Description popup.authors popup.nrat_date 2020-04-02 Close