Co-genetic formation of scheelite- and wolframite-bearing quartz veins in the Chuankou W deposit, South China: Evidence from individual fluid inclusion and wall-rock alteration analysis

•Wolframite- and scheelite-bearing quartz veins share the similar ore-forming fluid.•Magma source fluid responsible to the Chuankou W deposit.•The Ca-rich mineral in sandstone contributes Ca to precipitate scheelite.•Fluid-rock interaction exert a principle control on scheelite precipitation.