Experiments were conducted to explore the behavior of Li, Rb, Nb, Sn, Cs, Ta, W during crustal melting and test anatectic origin rare metal-bearing peraluminous granites such as metal (RMGs). The experiments performed under fluid-absent conditions at 800 850 °C, 400 MPa moderately reducing fO2 (ΔFMQ = − 0.5 0.8). Starting materials cores several millimetres drilled from two natural rocks, a bio...

The Neoproterozoic Nagarparkar Complex is characterized by isolated semicircular hillocks of outcrops of “withinplate” A-type peralkaline to peraluminous granites. Geochemically the granites/rhyolites of the Nagarparkar Complex are characterized by high SiO2, Na2O+K2O, K2O, Fe/Mg, Al2O3, Zr, Nb and Y and low CaO and Sr. Majority of samples show moderate iron enrichment. The rocks show the chara...

Most of the world’s large molybdenum (Mo) deposits are genetically related to magmas that underwent significant fractional crystallization and fluid exsolution, residual silicate melts commonly peralkaline. To understand relationship between melt compositions genesis porphyry Mo mineralization, partition coefficients (DMo) felsic were determined at 850 °C, 900 100 MPa with various values A/NK [...

Zircon U-Pb geochronology is routinely performed to unravel the timing and duration of melting events within continental crust. A comprehensive understanding zircon behavior during anatexis therefore paramount accurately assess impact crustal on orogenic processes. We report an anatectic system from southern part Velay dome (Variscan French Massif Central) encompassing late Carboniferous migmat...

bibi maryam granitoid body with about 5 km2 has intruded into ophiolite mélange complex in sistan suture zone, in east of iran. thermal effects of this body on the host rocks show that this activity occurred after emplacement of ophiolite mélange. this intrusive body with general northwest – southeast trend is mainly tonalite-quartz diorite but there is a minor unit as dykes of granodiorite in ...

The Rb-Sr whole-rock isochron, age 1636 ± 66 Ma of Mirgarani granite, is the one oldest granite dated in northwestern part Chhotanagpur Granite Gneiss Complex (CGGC). initial Sr ratio 0.715 0.012 (MSWD = 0.11), showing an S-type affinity. has intruded migmatite complex Dudhi Group and forms formation comparable to granites Bihar Mica Belt around Hazaribagh (1590 30 Ma). present studies have est...