Lamproites are mantle-derived ultramafic rocks and primary source rocks for hosting diamond apart from kimberlites. The present study area, Ramadugu lies in the NorthEastern part of Dharwar craton, along the NE margin of Cuddapah basin. These Lamproites are tube or pipe like structures and emplaced with a NW-SE trend. LISS-IV imageries were utilized to demarcate the drainage pattern, lineaments and hydro-geomorphology of the area. Ground Magnetic surveys were conducted using a Proton Precession Magnetometer (PPM) to delineate the Ramadugu Lamproite body. The magnetic anomaly maps were based on about 800 observation points along nine profiles of 500 m in length. The observation interval was 5m. The results of the present study have helped in a better understanding of the lineaments and the geological litho-units associated with the occurrence and emplacement of the Lamproite body in Ramadugu, Cuddapaha Basin, Andhra Pradesh and surrounding regions, where there is an occurrence of several Lamproites.

Geophysical methods have extensively been used in exploration of Lamproite bodies. Lamproites are significant source rocks of primary diamond deposits other than Kimberlites. The Eastern Dharwar Craton is unique in the way that it hosts numerous Precambrian Lamproites confined to the crescent-shaped Paleo-Mesoproterozoic Cuddapah Basin and its north-western and north-eastern margins. In the present study electrical method was used as a tool for delineation of Lamproite bodies in contrast with country rocks in Gundrapally, Vattikode and Marepally regions in parts of the North Eastern Dharwar Craton in Telangana State, India. The electrical profiling method was conducted in different direction to identify the variation of the lithology of the area due to the anisotropic nature and smaller size of the 2-D intrusive bodies adopting the Wenner electrode configuration. The electrical properties of the Lamproites tended to change with their composition due to weathering and the presence of Olivine and K-Al rich composition. The electrical response on the Lamproite pipes is shows a decrease in resistivity concerning the country-rock in the area.