Stockworks and disseminated W–Mo mineralization occur in the roof pendant of a 0.3 km monzogranitic porphyry stock that intruded into a granodiorite stock, hosted by Neoproterozoic phyllite and slate.LA-ICPMS zircon U–Pb analyses suggest that of the monzogranitic porphyry and granodiorite were formed at 143.8 ± 0.5 Ma and 149.8 ± 0.6 Ma, respectively.

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After strong differentiation it formed tungsten-bearing granitoids characterized by enrichment of high alkali, silicon and volatile components.

In the Yangchuling mine area the small monzogranitic porphyry stock has stronger fractionation, volatile content and ore-forming components than the older granodiorite, resulting in the development of the porphyry W–Mo ore system.

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This tearing of the subduction slab caused the upwelling of asthenosphere and the resulting mantle–crust interaction.

The granitoid-related W ore systems in JNB resulted from the remelting of the Proterozoic crust.

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