Geology of the Sausar Group of rocks is known from the days of P.N.Bose (1986) who initiated geological mapping of the rocks and was followed by P.N.Dutta (1893), accredited with the discovery of the associated manganese deposits. Since then, workers like Sir Lewis Fermor, W.D. West (1936), Straczek et.al. (1956), Naryanaswami et.al. (1963) and many others have dealt with the geology of Sausar Group. A review of the available literature points to a number of disagreements amongst the workers. This includes - Stratigraphic status of Tirodi biotite gneiss, correlation of the low grade phyllite-sericite schist of Bharweli-Ukwa belt, sedimentary versus autoclastic nature of conglomerates and igneous versus metamorphic origin of the amphibolites/granulites, especially of the western part of the belt. The calcareous metasediments of Sausars have maximum representation in the western part of Balaghat district where, apart from plenty of smaller metacarbonate lenses, three major bands, each covering more than 15 sq km of area, are exposed within gneissic (Tirodi biotite gneiss) country. These metacarbonates have been classified as Bichua Formation. The major metacarbonate bodies preserve contact metamorphic assemblages, distributed in distinct zoned aureoles, having lower temperature assemblages in the core and highest temperature assemblages along the periphery. The zonation is more pronounced where metacarbonate lenses are wider. They preserve an outer calcite-dolomite-forsterite (serpentinized)-diopside-chondrodite-spinel-tremolite assemblage followed by an intermediate calcite-dolomite-tremolite-biotite-white mica-spinel assemblage and an inner calcite-dolomite-tremolite -white mica-chlorite assemblage. Chondrodite, resembling garnet in physical appearance, is distinct in its anisotropism, however, is less common in the northernmost Paraspani-Pitesur band. The outer high temperature aureole extends for about 250m of width and grades into the intermediate zone of about 500m, finally passes into a core of low temperature assemblages. The high temperature zone of the periphery, at places, shows the presence of dark greyish-green coloured patches, just at the gneissic contact, with predominance of diopside over calcite / dolomite, and having accessory quartz, sphene, zoisite, epidote and calcic plagioclases. These patches, probably representing the special variety of calc-silicates, known as ‘skarns’ (Yardley,1989), are possibly formed by metasomatic interaction between marble and the enclosing biotite gneiss of probable intrusive origin. They have striking mineralogical and textural similarity with the numerously occurring calc silicate lenses present within the surrounding biotite gneiss. Presence of contact metamorphic assemblages in the Sausar metacarbonates, embedded within biotite gneiss of western Balaghat area, and their arrangement in an increasing metamorphic order, from core to periphery, is a clear indication of thermal effect caused by the enclosing biotite gneiss. Additionally, development of calc silicate assemblages at the contact zones and their ubiquitous presence, as lenses, along with the presence of numerous smaller metacarbonates patches, well within the surrounding gneiss further strengthens the possibility of the biotite gneiss being intrusive within the calcareous rocks of Sausar Group. This warrants an all out effort to re-examine the Sausar geology as a whole, especially in the light of the doubts raised by Banerji et.al. (2007) towards the origin of the manganese mineralisation associated with the Sausar rocks, to have a better understanding of its depositional history