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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 53  1994
Infrared Spectroscopy in Characterization of Metamorphic Garnets in Relation to other Techniques
S. ANNADURAI, AsoK KuMAR SAMANTA AND SACHINATH MITRA
Pages : 109-115
DOI : 10.1080/0371750X.1994.10804653
Abstract
For investigating the complex crystallochemical character of garnets occurring in multiply metamorphosed rock sequence of upper amphibolite-granulite facies, infrared spectroscopy has been found to offer some valuable clues as to the presence of OH-bands, unexpected in high P-T mineral phases. The investigation has been supplemented by EPMA (electron probe microanalysis) and X-ray diffraction method. IR studies of seven garnets from different areas of the Sittampundi (Tamil Nadu) metamorphic terrains reveal the presence of OH stretching components (around 3600 cm-1 ). A linear decrease in wavenumbers of IR bands in the 1000-450 cm-1 region is observed to be related with changes of cell-edges.
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