The Nagarparker area of the Trans-Aravalli Belt comprises Precambrian igneous and
metamorphic basement rocks, predominantly granites. These granites are subalkalic to
alkalic A-type containing riebeckite, ferro-richterite, ferro-edenite±arvedsonite amphiboles,
and rutile, zircon, apatite, allanite, titanite, titano-magnetite, ilmenite, magnetite and fluorite
accessory minerals. The variations in Nb, Y, Ce and Ga and Ga/Al ratios typify the granites of
the area as post-orogenic A2-type, formed possibly by partial melting of the island arc crust …