The algal limestones near Krisnanagar of Raipur city show branched Columnar structure, Baicalia.the lime stones belongs to Raipur group of Chhattisgarh Super group. This type may be classified under (LLH-C) mode (Logan et al 1964). Rounded Oncolites occur as surface structures on the growing columnar structures. Rhombohedral dolomitic crystals constitute (40%) volume of the observed sections suggesting hypersaline magnesium rich Sabkha environment. The LLH-C mode suggest protected inter tidal mud-flat environments, where wave action is slight.