Orbicular Structures in Bundelkhand Granitoid Complex Near Pichhore, Shivpuri District, Madhya Pradesh

The Paper records the occurrence of large sired proto, single shell and Multi-Shell orbicular structures from the Bundelkhand Granitoid Complex. The orbicular structures are developed in an aplitic granite traversing the coarse grained link granite exposed to the SSW of village Kutawali (24°07'45'': 78°10'20") in pichhore Tehsil of Shivpuri district, Madhya Pradesh. The Core and matrix of the orbicules have identical composition and hence the orbicular structures are classified under Homo-Thrausmatic and Iso-Thrausmatic category. The chemical analyses of the orbicular rocks plot in the Quartz-Monzbnite field in Na₂O-K₂O and K₂O-Na₂O-CaO diagram. The composition of the orbicules represents a felsic Parentage: Per!thitic,intergrowth points to the igneous origin of the orbicular structures.