Abstract
The Shizhuyuan ore field has three mineralized zones around the Qianlishan granite complex with a radius of ~6 km: W-Sn-Mo-Bi (inner zone), Pb-Zn (middle zone), and Hg-Sb (outer zone). However, whether Pb-Zn and Hg-Sb mineralization is genetically related to the Qianlishan granites is still debated. Here, we conducted in situ pyrite trace element analysis to study the combinations and distributions. The Bi concentration gradually decreases from the inner zone to the outer zone, while the Mn and Sb contents show the opposite trend. Pyrites from each zone are distributed in distinct zones in the binary plot of Co/Ni-Bi, which is an effective discrimination diagram indicating the degree of hydrothermal alteration. Collectively, the gradual changes in pyrite trace element characteristics among the three ore-forming zones provide evidence to indicate that these zones probably compose a whole magmatic-hydrothermal system associated with the Qianlishan granite complex.
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