The major and trace element data show that SiO2, Au, As and Sb contents increase progressively with CaO and MgO contents decreasing gradually from unaltered to the most intensely silicified and mineralized limestones and that SiO2 contents decrease with CaO and CO2 increasing in intensely carbonated limestones. The REE contents and chondrite normalized patterns of the altered and mineralized rocks are largely consistent with those of the unaltered host rocks(laminated limestone). The fluid inclusion data indicate that the ore-forming fluids are of the Cl-rich type and that filling temperatures of fluid inclusions in the quartz and calcite are about 200～338℃. The isotopic data show that the δ 34 S values ranging from 16.078×10-3 to 20.48×10-3, the δ18O and δ D values are(19.4～23.0)×10-3 and(-110 ～-47)×10-3, respectively, 206Pb/ 204Pb, 207Pb/ 204Pb and 208Pb/ 204Pb falling within the ranges of 18.288～19.202, 15.685～15.793 and 38.366～40.401 respectively. The medium water of ore fluids was dominantly of meteoric origin. The ore-forming materials were predominately of crust source with small amounts of mantle component.