金川岩浆铜镍硫化物矿床中镍黄铁矿特征及对成矿过程的指示

Key Points

• The study investigates the genesis and mineral characteristics of nickel pyrite in the Jinchuan magmatic copper-nickel sulfide deposits.
• Petrographic analysis
• Trace element analysis
• Iron isotope analysis
• Two types of nickel pyrite identified: early-stage (Pn-I) and late-stage (Pn-II).
• Early-stage pyrite shows developed radial fractures and coexists with magnetite, indicating a crystalline sulfide phase.
• Late-stage pyrite exhibits strict contact edges and higher concentrations of Ni, Co, and P along with other minerals, suggesting fluid interaction.