Abstract
The Shanhu orefield, located in the northeastern Guangxi province, is an important part of W-Sn polymetallic metallogeny in the Nanling region. The Shanhu W-Sn deposit is spatially associated with the Yantianling granite. LA-ICPMS zircon U-Pb dating of the Yantianling granite yields Late Cretaceous ages of 100.9±2.2Ma and 100.8±2.3Ma. Hydrothermal muscovite 40Ar/39Ar dating yields plateau ages of 102.7±1.7Ma and 100.8±0.7Ma. This date coincides well with the LA-ICPMS zircon U-Pb age of the Yantianling granite, indicating a spatial-temporal link between the W-Sn mineralization and the granitic magmatism. In combination with regional geological data, it is suggested that a Late Cretaceous mineralization event related to granitic magmatism occurred in the Nanling region, which might have resulted from regional lithospheric extension.
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