Garnets from high P—T granulite field of Sittampundi, Tamil Nadu were investigated by57Fe Mössbauer spectroscopy. The room temperature (298 K) three-band spectra, which have been splitted to two doublets, reveal Fe2+ions to be exclusively located at dodecahedral site (IS = 1.303–1.389 mm/s; QS = 3.423–3.822 mm/s) and Fe3+at tetrahedral site (IS = 0.0060.163 mm/s; QS = 0.520–0.663 mm/s). The Fe3+/∑Fe ratios vary between 0.073 and 0.150, which indicate its formation at high P—T field. The high values of QS of tetrahedral Fe3+suggest that the occupied site is very regular with little distortion. The fairly broad line-width (FWHM, 0.455–0.596 mm/s) of Fe3+doublet may arise from a substitution of some tetrahedral Si by (OH)−group. The strong partition and ordering of Fe2+and Fe3+in dodecahedral and tetrahedral sites, having octahedral sites totally free from iron, suggest in a strong measure of slow cooling and recrystallization of garnet through decompression. The presence of tetrahedral Fe3+strongly depicts the existence of octahedral Si, amounting to an excess of saturation value for tetrahedral sites by Si + Fe3+ions together at these sites.