Highly differentiated juvenile crust-derived magmas linked with the Xilekuduke porphyry Mo (Cu) deposit in East Junggar, NW China

Zircon O-Hf isotopic composition of Xilekuduke ore related granitoids and Mo mineralization mechanism in juvenile materials. A: Xilekuduke ore related intrusions show mantle-like zircon oxygen isotopic compositions. They have distinct difference with altered oceanic crust and show similarities with common MORB and gabbro at Zhaheba Ophiolite, indicates partial melting of buried juvenile oceanic crust. B: The granitic intrusions have high Differentiation Index (DI) and show differentiation trend from monzogranite to granite porphyry. They also show similarities with porphyry Mo and Cu deposits in the CAOB and reveal Mo enrichment in highly differentiated magma.