Leucogranite Magmatism in Sewariya-Govindgarh Areas of Rajasthan and its Relevance to Tungsten Mineralisation

In Sewariya-Alniawas-Govindgarh areas of central Rajasthan, the Delhi metasediments are intruded by an older, biotite granite (Sewariya granite) which is equivalent to Erinpura granite occurring further south, and an younger, tourmaline leucogranite (Govindgarh granite) which is geochemically specialised. Sewariya granite hosts wolframite bearing quartz veins along its sheared contact with mica schist of Barotiya Group. Govindgarh granite occurs in the form of small intrusive bodies within rocks of Barotiya Group, essentially along a major ductile shear zone at the western margin of South Delhi fold belt. Our study reveals that leucogranite magmatism yielded tungsten mineralisation in Sewariya area.