Bauxite mainly consists of the major minerals: kaolinite, quartz, gibbsite, boehmite, goethite and hematite. Large quantities of bauxite often occur in the form of small balls (pisoliths). Mineralogical determinations are complicated by the numerous minerals of very similar elemental composition of various phases which are not easily discernable using techniques such as X-ray fluorescence (XRF) and atomic spectroscopy. Conventional X-ray diffraction and wet chemical methods may lead to an accurate measurement phase and/or element proportions, but are time consuming, prohibiting large scale routine analysis. In this context, FTIR (Fourier Transform Infra-Red) imaging has emerged as a valuable technique for the examination of various mineral phases and for phase mapping. In this paper, we present our results on the FTIR imaging studies on bauxite in the form of complex pisoliths. Synchrotron FTIR results were used to validate the results of FTIR imaging. General Area Diffraction Detector System (GADDS) was used to map presence of boehmite in the bauxite pisolith. Boehmite inclusions in the size of 5 to 20 microns were easily detected by FTIR imaging and the results were further confirmed by Synchrotron FTIR and GADDS technique. The results not only showed the phase identification but also the two dimensional location and mineralogical association of these phases.